Hi,
I checked by comparing between Pluma and FF scrollbar.
I FF its too easy to miss trying to grab the scrollbar button and hitting a gap (that is not present in Pluma) on either side of the bar/button. This means I keep scrolling a long way down FF pages therefore losing my place.
I just switched to the dark version of Ambiant-MATE and it’s scrollbar in FF does not do this. I’ll try and fix this in vanilla Ambiant-MATE theme but my theming skills are very rusty.