arni2033 Reporter
	Description • 8 years ago

>>>   My Info:   Win7_64, Nightly 49, 32bit, ID 20160526082509
STR_1:
0. Maximize Firefox window
1. Open about:config, click "I accept the risk!"
2. Hover mouse over scrollbar thumb, t hen move mouse horizontally to the right side of the screen
3. Hold left mouse button
4. Hover mouse over the rightmost pixel on the screen, then try to scroll by dragging scrollbar thumb

AR:  No visible action, because <tree> element on the page has border-right-width: 1px
ER:  It should be bossible to scroll in described way

Notes:
1) The right component is "Firefox :: Theme" or "Toolkit :: Theme"
2) Because in the past it was obvious that devs don't want user to scroll in described way (there was 5px indent), but now that scrollbar looks like a normal scrollbar on a webpage (1px black border is almost not noticeable), therefore it should allow to scroll in the same way
3) Read Fitt's law - it's easier to scroll as described:   https://en.wikipedia.org/wiki/Fitts's_law

	Ciprian Muresan [:cmuresan], Ecosystem QA
	Comment 1 • 7 years ago

User Agent 	Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:54.0) Gecko/20100101 Firefox/54.0
Build ID 	20170130030205

I was able to reproduce the issue on the latest Firefox Release (51.0.1) and on the latest Nightly (54.0a1).

	Julien Cristau [:jcristau]
	Comment 2 • 7 years ago

Too late for firefox 52, mass-wontfix.

	Firefox Bug Husbandry Bot
	Comment 3 • 6 years ago

https://wiki.mozilla.org/Bug_Triage/Projects/Bug_Handling/Bug_Husbandry#Move_fix-optionals