modeling plugin crashes qt creator on right click in class name field

Steps to reproduce:

1. Open QtCreator 4.14.0
2. In File menu select 'New File or Project...'
3. In 'File and Classes' pane select 'Modeling', then in middle pane select 'Model'
4. Click the 'Choose...' button
5. Enter arbitrary file name and location and click 'Next' button.
6. Click the 'Finish' button.
7. Drag a 'class' symbol in the modelling area.
8. Right mouse click in the selected 'New class' text field.
9. QtCreator crashes.

Environment:

OS: OpenSuse Leap 15.2
QtCreator 4.14.0 installed with online installer