Hey guys! Removing
layout.css.scrollbar-color.enabled preference causes serious issue for me! Precise navigation in source code in developer tools are impossible without scrollbar arrows - bug 1579631
Also, I know designers want to have pretty scrollbars everywhere, but even here on bugzilla this colored scrollbar seriously reduces it's usability by blending with background - I have issues with locating where on the page I am.
Of course this can be causes by my bad eyesight or old monitor and you may not perceive it like this, but for me missing scrollbar arrows and scrollbar blending with background is a serious accessibility/usability issue!
Regressed by https://bugzilla.mozilla.org/show_bug.cgi?id=1641324
Also notice this when filling this issue - this does not even look like scrollbar - see attachment.