Yes, Moodle 4.0.
The screenshots below were taken on a 24" monitor at 1902 x 1200 resolution, Windows 7*.
Google.com, Facebook.com, Wikipedia.com, Amazon.com, Instagram.com, etc. use the the browser standard scrollbar which looks like this on Firefox:
YouTube uses the standard scroolbar but has reversed the darkness of the color, which is nice:
Moodle 4.0 uses a dark but too narrow bar:
On Chrome, the bar gets even narrower:
Today, Google.com, YouTube.com, Facebook.com, Wikipedia.com, Amazon.com and Instagram.com combined have over 170 billion visits per month. They all use the standard browser scrollbar, which users know and expect. If Moodle really wants to implement a custom scrollbar, it should be designed more accessible than the standard one, not less.
* Market share worldwide as of Jan 2022. Win10: 81%, Win7: 12%, Win8: 3%. Win11: 2.4%.
Using latest Firefox on Windows 10, Boost theme.
https://www.w3schools.com/cssref/playit.asp?filename=playcss_cursor&preval=grabbing
Cf.
https://tracker.moodle.org/browse/MDL-72877
and
https://tracker.moodle.org/browse/MDL-72456 .
#page.drawers, .drawercontent { scrollbar-width: inherit; }