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Bug
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    Resolution: Duplicate
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P1: Critical
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    5.12.0 RC
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    None
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    Windows 10 1809 64 bit
 
- 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:

- duplicates
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QTBUG-71238 QQC1 Button with Menu broken on second popup
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 - Closed
 
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