Make sure that math and IQB keyboard can't be open at the same time

- Remove the delay when opening the math keyboard in favor of an
explicit check

projects/common/math-editor/math-input.component.ts

@@ -121,11 +121,8 @@ export class MathInputComponent implements AfterViewInit, OnChanges, OnDestroy {
   }
 
   onFocusIn() {
-    // give iqb keyboard time to animate
-    setTimeout(() => {
-      this.focusIn.emit(this.mathFieldElement);
-      window.mathVirtualKeyboard.show({ firstLayer: true, resetShift: true });
-    }, 250);
+    this.focusIn.emit(this.mathFieldElement);
+    window.mathVirtualKeyboard.show({ firstLayer: true, resetShift: true });
   }
 
   private setKeyboardLayout(): void {

projects/player/src/app/directives/text-input-group.directive.ts

@@ -45,6 +45,7 @@ export abstract class TextInputGroupDirective extends ElementFormGroupDirective
       this.mathKeyboardService
         .toggle(focusedTextInput as { inputElement: MathfieldElement; focused: boolean },
           elementComponent);
+      this.forceCloseKeyboard();
     } else if (!(elementComponent instanceof MathFieldComponent)) {
       if (elementComponent.elementModel.showSoftwareKeyboard && !elementComponent.elementModel.readOnly) {
         promises.push(this.keyboardService
@@ -69,12 +70,26 @@ export abstract class TextInputGroupDirective extends ElementFormGroupDirective
             this.isKeypadOpen = this.keypadService.isOpen;
             if (this.keyboardService.isOpen || this.keypadService.isOpen) {
               this.inputElement = this.getInputElement(focusedTextInput.inputElement);
+              this.forceCloseMathKeyboard();
             }
           });
       }
     }
   }
 
+  private forceCloseKeyboard(): void {
+    if (this.mathKeyboardService.isOpen && this.keyboardService.isOpen) {
+      this.keyboardService.close();
+      this.unsubscribeFromKeyboardEvents();
+    }
+  }
+
+  private forceCloseMathKeyboard(): void {
+    if (this.mathKeyboardService.isOpen && this.keyboardService.isOpen) {
+      this.mathKeyboardService.close();
+    }
+  }
+
   // eslint-disable-next-line class-methods-use-this
   checkInputLimitation(event: {
     keyboardEvent: KeyboardEvent;