[Breeze] [Bug 340917] Titlebar buttons and actions not responding right after changing focus by clicking titlebar

[Martin Gräßlin]

> Does this mean it is an internal bug in Qt or its XCB binding?

The bug is most likely inside Qt. Given the code-review and the description it 
would explain the bug and would indicate it's inside the XCB plugin.

I haven't tested whether the change would fix it, but KDecoration2 will. In 
any case the next release of Plasma will probably have addressed this issue. 
I'm currently using KDecoration2 and this problem is clearly not present ;-)