*** If you're not sure this is actually a bug, instead post about it at https://discuss.kde.org If you're reporting a crash, attach a backtrace with debug symbols; see https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports Please remove this comment after reading and before submitting - thanks! *** SUMMARY As title says. STEPS TO REPRODUCE 1. Have Breeze (or Breeze Dark) as your icon theme 2. Open a GTK3 application, that has a spinbutton widget (number input with -+ buttons) 3. Look at the widget OBSERVED RESULT The widget has an X instead of a - for the icon EXPECTED RESULT The decrease value icon is still a -, as it was previously SOFTWARE/OS VERSIONS Windows: macOS: (available in the Info Center app, or by running `kinfo` in a terminal window) Linux/KDE Plasma: KDE Plasma Version: 6.1.5 KDE Frameworks Version: 6.6.0 Qt Version: 6.7.3 ADDITIONAL INFORMATION I use Artix (based on Arch), fully upgraded. With downgrade I see that version 6.6.0-1 shows the bug, but 6.5.0-1 does not. It happens with new users and switching to another icon theme also fixes it (papirus was tested). GTK4 is not affected.
This is a bug in GTK, which uses that icon inappropriately. So when we changed it in the Breeze theme, it made spinboxes look wrong. In GTK4 they fixed this and made their spinboxes use a different icon that isn't also used for removing list items. Can you report this to GTK and ask them to backport that change to GTK 3 as well? Thanks!
*** Bug 495663 has been marked as a duplicate of this bug. ***
I've gone ahead and submitted a GTK patch to fix this at https://gitlab.gnome.org/GNOME/gtk/-/issues/7080.