I'm not sure what "product" to report this to because it affects any theme, not just Breeze. Tooltips are unreadable on GTK+2 applications by default. You can test it with MComix (available on the Ubuntu repositories). I tested different combinations of Plasma themes and GTK application styles. I also unchecked "Apply colors to non-QT applications" on the Color settings. The problem still persisted. The only solution I've found to this problem is commenting out these lines in ~/.config/gtkrc-2.0 : widget "gtk-tooltip" style "ToolTip" widget "gtk-tooltips" style "ToolTip" Adding # before these lines make the applications use the default tooltips of my current KDE Plasma theme. Reproducible: Always
duplicate of 355540
*** This bug has been marked as a duplicate of bug 355540 ***