- 
    
Bug
 - 
    Resolution: Unresolved
 - 
    
P3: Somewhat important
 - 
    None
 - 
    5.13.0
 - 
    None
 - 
    ubuntu 16.04
 
Setting a stylesheet on a dock window to darken the tile causes a QStyle::PE_IndicatorBranch drawn in it not to be displayed.
The attached project provides a minimal set to reproduce the issue.
Uncommenting MainWindow.cpp:71-21 causes the issue to appear.