SUMMARY There is no way to enable the gtk-primary-button-warps-slider configuration option for both GTK2 and GTK3 applications, this leads to inconsistent behavior in QT and GTK applications, in Plasma version 5.17 and prior you can set this setting, now with the recent changes introduced in Plasma 5.18 the option is missing. STEPS TO REPRODUCE 1. Open System Settings 2. Go to Application Style 3. Try to configure how sliders work for both GTK2 and GTK3 application OBSERVED RESULT Missing configuration option EXPECTED RESULT gtk-primary-button-warps-slider should be configurable or at least inherit the current style's option (as with the theme)
Do you have "Clicking in scrollbar track" in Workspace Behavior > General Behavior? If you have, does the change of value changes the config line in ~/.gtkrc-2.0 and ~/.config/gtk-3.0/settings.ini called "gtk-primary-button-warps-slider"?
(In reply to Mikhail Zolotukhin from comment #1) > Do you have "Clicking in scrollbar track" in Workspace Behavior > General > Behavior? If you have, does the change of value changes the config line in > ~/.gtkrc-2.0 and ~/.config/gtk-3.0/settings.ini called > "gtk-primary-button-warps-slider"? Yes it's working now, after changing the setting Breeze and GTK settings are now synced again and working as expected