- Open a qml file in Design mode.
- In the Properties view, click on one of the small "nut" icons.
A popup menu will appear:
- Click somewhere else in the Properties view.
The menu will disappear.
- Click on the same "nut" icon again.
The menu will not come back.
Clicking on one of the other "nut" icons will still show a menu but also only once.
I can only reproduce this with Qt Creator built on Qt 5.12.0. A Qt Creator built on Qt 5.11.2 works correctly.
The gallery example of Qt Quick Controls 1 has the same issue: