Created attachment 103940 [details] titlebar color leak illustration I am using a custom color theme for my Plasma 5.85. There seem to be some color leak issues going on for the title bar. The relevant part from the .colors file is as follows: [WM] activeBackground=21,101,192 activeBlend=20,19,18 activeForeground=187,222,251 inactiveBackground=216,27,96 inactiveBlend=219,219,219 inactiveForeground=240,98,146 My active foreground is blue and inactive foreground pink. And the issue is that the pink leaks into the active window's title bar (sometimes blue will also leak into inactive title bar). Not sure what caused it but really annoying. I don't think this issue is specific to my custom color theme. Other custom themes can also demonstrate this issue.
Reported as bug 376263.