https://community.adobe.com/questions-675/sliders-cannot-be-adjusted-with-keyboard-arrows-in-full-screen-973028
Sliders cannot be adjusted with keyboard arrows in full screen | Community
I've been struggling the last few days to understand why I can't use my keyboard arrows to adjust my sliders (global and masking sliders). Sometimes it...
keyboard arrowsin fullsliderscannotadjusted
https://bugzilla.mozilla.org/show_bug.cgi?id=950373
950373 - Up and Down Keyboard Arrows no longer work in the Restore Session frame / box