diff --git a/ui-ngx/src/app/shared/components/json-form/json-form.component.html b/ui-ngx/src/app/shared/components/json-form/json-form.component.html
index 85bb0a71b8..e709307e90 100644
--- a/ui-ngx/src/app/shared/components/json-form/json-form.component.html
+++ b/ui-ngx/src/app/shared/components/json-form/json-form.component.html
@@ -15,8 +15,9 @@
     limitations under the License.
 
 -->
-<div class="tb-json-form" style="background: #fff;" tb-fullscreen [fullscreenElement]="targetFullscreenElement"
+<div class="tb-json-form" style="background: #fff;" tb-fullscreen [fullscreenElement]="reactFullscreen"
      [fullscreen]="isFullscreen"
      (fullscreenChanged)="onFullscreenChanged($event)">
   <div #reactRoot></div>
+  <div class="tb-json-form" #reactFullscreen></div>
 </div>
diff --git a/ui-ngx/src/app/shared/components/json-form/json-form.component.ts b/ui-ngx/src/app/shared/components/json-form/json-form.component.ts
index fa8b9b3427..5d28c12247 100644
--- a/ui-ngx/src/app/shared/components/json-form/json-form.component.ts
+++ b/ui-ngx/src/app/shared/components/json-form/json-form.component.ts
@@ -73,6 +73,9 @@ export class JsonFormComponent implements OnInit, ControlValueAccessor, Validato
   @ViewChild('reactRoot', {static: true})
   reactRootElmRef: ElementRef<HTMLElement>;
 
+  @ViewChild('reactFullscreen', {static: true})
+  reactFullscreenElmRef: ElementRef<HTMLElement>;
+
   private readonlyValue: boolean;
   get readonly(): boolean {
     return this.readonlyValue;
@@ -106,8 +109,7 @@ export class JsonFormComponent implements OnInit, ControlValueAccessor, Validato
   isModelValid = true;
 
   isFullscreen = false;
-  targetFullscreenElement: HTMLElement;
-  fullscreenFinishFn: () => void;
+  fullscreenFinishFn: (el: Element) => void;
 
   private propagateChange = null;
   private propagateChangePending = false;
@@ -233,8 +235,7 @@ export class JsonFormComponent implements OnInit, ControlValueAccessor, Validato
     });
   }
 
-  private onToggleFullscreen(element: HTMLElement, fullscreenFinishFn?: () => void) {
-    this.targetFullscreenElement = element;
+  private onToggleFullscreen(fullscreenFinishFn?: (el: Element) => void) {
     this.isFullscreen = !this.isFullscreen;
     this.fullscreenFinishFn = fullscreenFinishFn;
     this.cd.markForCheck();
@@ -244,7 +245,7 @@ export class JsonFormComponent implements OnInit, ControlValueAccessor, Validato
     this.formProps.isFullscreen = fullscreen;
     this.renderReactSchemaForm(false);
     if (this.fullscreenFinishFn) {
-      this.fullscreenFinishFn();
+      this.fullscreenFinishFn(this.reactFullscreenElmRef.nativeElement);
       this.fullscreenFinishFn = null;
     }
   }
diff --git a/ui-ngx/src/app/shared/components/json-form/react/json-form-ace-editor.tsx b/ui-ngx/src/app/shared/components/json-form/react/json-form-ace-editor.tsx
index 12879d1fae..1ae375908f 100644
--- a/ui-ngx/src/app/shared/components/json-form/react/json-form-ace-editor.tsx
+++ b/ui-ngx/src/app/shared/components/json-form/react/json-form-ace-editor.tsx
@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 import * as React from 'react';
+import * as ReactDOM from 'react-dom';
 import ThingsboardBaseComponent from './json-form-base-component';
 import reactCSS from 'reactcss';
 import Button from '@material-ui/core/Button';
@@ -42,6 +43,7 @@ interface ThingsboardAceEditorProps extends JsonFormFieldProps {
 
 interface ThingsboardAceEditorState extends JsonFormFieldState {
   isFull: boolean;
+  fullscreenContainerElement: Element;
   helpVisible: boolean;
   helpReady: boolean;
   focused: boolean;
@@ -49,7 +51,6 @@ interface ThingsboardAceEditorState extends JsonFormFieldState {
 
 class ThingsboardAceEditor extends React.Component<ThingsboardAceEditorProps, ThingsboardAceEditorState> {
 
-    hostElement: HTMLElement;
     private aceEditor: IEditorProps;
 
     constructor(props) {
@@ -64,6 +65,7 @@ class ThingsboardAceEditor extends React.Component<ThingsboardAceEditorProps, Th
         const value = props.value ? props.value + '' : '';
         this.state = {
             isFull: false,
+            fullscreenContainerElement: null,
             helpVisible: false,
             helpReady: true,
             value,
@@ -131,12 +133,8 @@ class ThingsboardAceEditor extends React.Component<ThingsboardAceEditorProps, Th
     }
 
     onToggleFull() {
-        this.setState({ isFull: !this.state.isFull });
-        this.props.onToggleFullscreen(this.hostElement, () => {
-          if (this.aceEditor) {
-            this.aceEditor.resize();
-            this.aceEditor.renderer.updateFull();
-          }
+        this.props.onToggleFullscreen((el) => {
+          this.setState({ isFull: !this.state.isFull, fullscreenContainerElement: el });
         });
     }
 
@@ -177,56 +175,61 @@ class ThingsboardAceEditor extends React.Component<ThingsboardAceEditorProps, Th
         if (this.state.isFull) {
             containerClass += ' fullscreen-form-field';
         }
-        return (
-          <div>
-            <div className='tb-json-form' ref={c => (this.hostElement = c)}>
-              <div className={containerClass}>
-                  <label className={labelClass}>{this.props.form.title}</label>
-                  <div className='json-form-ace-editor'>
-                      <div className='title-panel'>
-                          <label>{this.props.mode}</label>
-                          { this.props.onTidy ? <Button style={ styles.tidyButtonStyle }
-                                                       className='tidy-button' onClick={this.onTidy}>Tidy</Button> : null }
-                          { this.props.form.helpId ? <div style={ {position: 'relative', display: 'inline-block', marginLeft: '5px'} }>
-                            <IconButton color='primary'
-                                        className='help-button' onClick={this.onHelp}>
-                                        {this.state.helpVisible ? <Help /> : <HelpOutline /> }
-                             </IconButton>
-                            { this.state.helpVisible && !this.state.helpReady ?
-                              <div className='tb-absolute-fill help-button-loading'>
-                                <CircularProgress size={18} thickness={4}/>
-                               </div> : null }</div> : null }
-                          <Button style={ styles.tidyButtonStyle }
-                                  className='tidy-button' onClick={this.onToggleFull}>
-                            {this.state.isFull ?
-                              'Exit fullscreen' : 'Fullscreen'}
-                          </Button>
-                      </div>
-                      <React.Suspense fallback={<div>Loading...</div>}>
-                        <ReactAce  mode={this.props.mode}
-                                   theme={'textmate'}
-                                   height={this.state.isFull ? '100%' : '150px'}
-                                   width={this.state.isFull ? '100%' : '300px'}
-                                   onChange={this.onValueChanged}
-                                   onFocus={this.onFocus}
-                                   onBlur={this.onBlur}
-                                   onLoad={this.onLoad}
-                                   name={this.props.form.title}
-                                   value={this.state.value}
-                                   readOnly={this.props.form.readonly}
-                                   editorProps={{$blockScrolling: Infinity}}
-                                   enableBasicAutocompletion={true}
-                                   enableSnippets={true}
-                                   enableLiveAutocompletion={true}
-                                   style={style}/>
-                      </React.Suspense>
-                  </div>
-                  <div className='json-form-error'
-                       style={{opacity: this.props.valid ? '0' : '1'}}>{this.props.error}</div>
+        const formDom = (
+          <div className={containerClass}>
+            <label className={labelClass}>{this.props.form.title}</label>
+            <div className='json-form-ace-editor'>
+              <div className='title-panel'>
+                <label>{this.props.mode}</label>
+                { this.props.onTidy ? <Button style={ styles.tidyButtonStyle }
+                                              className='tidy-button' onClick={this.onTidy}>Tidy</Button> : null }
+                { this.props.form.helpId ? <div style={ {position: 'relative', display: 'inline-block', marginLeft: '5px'} }>
+                  <IconButton color='primary'
+                              className='help-button' onClick={this.onHelp}>
+                    {this.state.helpVisible ? <Help /> : <HelpOutline /> }
+                  </IconButton>
+                  { this.state.helpVisible && !this.state.helpReady ?
+                    <div className='tb-absolute-fill help-button-loading'>
+                      <CircularProgress size={18} thickness={4}/>
+                    </div> : null }</div> : null }
+                <Button style={ styles.tidyButtonStyle }
+                        className='tidy-button' onClick={this.onToggleFull}>
+                  {this.state.isFull ?
+                    'Exit fullscreen' : 'Fullscreen'}
+                </Button>
               </div>
+              <React.Suspense fallback={<div>Loading...</div>}>
+                <ReactAce  mode={this.props.mode}
+                           theme={'textmate'}
+                           height={this.state.isFull ? '100%' : '150px'}
+                           width={this.state.isFull ? '100%' : '300px'}
+                           onChange={this.onValueChanged}
+                           onFocus={this.onFocus}
+                           onBlur={this.onBlur}
+                           onLoad={this.onLoad}
+                           name={this.props.form.title}
+                           value={this.state.value}
+                           readOnly={this.props.form.readonly}
+                           editorProps={{$blockScrolling: Infinity}}
+                           enableBasicAutocompletion={true}
+                           enableSnippets={true}
+                           enableLiveAutocompletion={true}
+                           style={style}/>
+              </React.Suspense>
             </div>
+            <div className='json-form-error'
+                 style={{opacity: this.props.valid ? '0' : '1'}}>{this.props.error}</div>
           </div>
         );
+        if (this.state.isFull) {
+          return ReactDOM.createPortal(formDom, this.state.fullscreenContainerElement);
+        } else {
+          return (
+            <div>
+                {formDom}
+            </div>
+          );
+        }
     }
 }
 
diff --git a/ui-ngx/src/app/shared/components/json-form/react/json-form-schema-form.tsx b/ui-ngx/src/app/shared/components/json-form/react/json-form-schema-form.tsx
index 782ac11ef8..e600e8b6fa 100644
--- a/ui-ngx/src/app/shared/components/json-form/react/json-form-schema-form.tsx
+++ b/ui-ngx/src/app/shared/components/json-form/react/json-form-schema-form.tsx
@@ -106,8 +106,8 @@ class ThingsboardSchemaForm extends React.Component<JsonFormProps, any> {
     this.props.onIconClick(key, val, iconSelectedFn);
   }
 
-  onToggleFullscreen(element: HTMLElement, fullscreenFinishFn?: () => void) {
-    this.props.onToggleFullscreen(element, fullscreenFinishFn);
+  onToggleFullscreen(fullscreenFinishFn?: (el: Element) => void) {
+    this.props.onToggleFullscreen(fullscreenFinishFn);
   }
 
   onHelpClick(event: MouseEvent, helpId: string, helpVisibleFn: (visible: boolean) => void, helpReadyFn: (ready: boolean) => void) {
diff --git a/ui-ngx/src/app/shared/components/json-form/react/json-form.models.ts b/ui-ngx/src/app/shared/components/json-form/react/json-form.models.ts
index e36b36010b..b170bacb28 100644
--- a/ui-ngx/src/app/shared/components/json-form/react/json-form.models.ts
+++ b/ui-ngx/src/app/shared/components/json-form/react/json-form.models.ts
@@ -48,7 +48,7 @@ export type OnColorClickFn = (key: (string | number)[], val: tinycolor.ColorForm
                               colorSelectedFn: (color: tinycolor.ColorFormats.RGBA) => void) => void;
 export type OnIconClickFn = (key: (string | number)[], val: string,
                              iconSelectedFn: (icon: string) => void) => void;
-export type onToggleFullscreenFn = (element: HTMLElement, fullscreenFinishFn?: () => void) => void;
+export type onToggleFullscreenFn = (fullscreenFinishFn?: (el: Element) => void) => void;
 export type onHelpClickFn = (event: MouseEvent, helpId: string, helpVisibleFn: (visible: boolean) => void,
                              helpReadyFn: (ready: boolean) => void) => void;