1296082 - [linux] when moving a tab, you have to continuously wiggle the mouse to get the tab area to scroll left/right

Status: NEW

(Firefox :: Tabbed Browser, defect, P3)

Description

[Dana Keeler (she/her) [:keeler]]

STR: Open many tabs (enough so you get a left and/or right arrow to scroll through them). Then, click and drag on a tab to move it. To move it to be near tabs that aren't visible (because they're in the overflow area), you have to bring your mouse to the scroll arrow (this make sense). However, after a bit of movement, scrolling stops. To get it going again, you can wiggle the mouse a little. This only causes a bit of scrolling. To continue to where you want to drop your tab, you have to keep wiggling the mouse. This is not a great user experience.

Comment 1

[:Gijs (he/him)]

Is this a regression? What platform are you seeing this on? What version of Firefox? Have you checked it happens on a clean profile ( https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles ) ? (I can't reproduce on 49 beta on OS X.)

Comment 2

[Dana Keeler (she/her) [:keeler]]

It's not a regression - it's been this way for as long as I can remember.
This is Fedora 23 (so Linux).
Happens on a clean profile.

Comment 3

[:Gijs (he/him)]

(In reply to David Keeler [:keeler] (use needinfo?) from comment #2)
> It's not a regression - it's been this way for as long as I can remember.
> This is Fedora 23 (so Linux).
> Happens on a clean profile.

Huh, odd. Yeah, this seems to be linux-specific - I can repro on my ubuntu vm. TBH, that probably means it's likely to be a core problem, but we'd need to poke at it more to find out, so let's leave it here for now. Marking P2 for now because I agree this is not OK, but I don't have cycles to poke at this straight away.

Comment 4

[Dana Keeler (she/her) [:keeler]]

Something changed recently that slowed the scroll speed, making this a much bigger problem. The amount of wiggling I have to do to move a tab is excessive. Can we prioritize investigating this?

Comment 5

[:Gijs (he/him)]

(In reply to David Keeler [:keeler] (use needinfo?) from comment #4)
> Something changed recently that slowed the scroll speed, making this a much
> bigger problem. The amount of wiggling I have to do to move a tab is
> excessive. Can we prioritize investigating this?

The regression is tracked in bug 1387130 / bug 1387718. I don't have cycles to prioritize this bug myself. I think the photon visual team and/or mconley is investigating solutions for the regression on nightly right now on those bugs.

Comment 6

[Dana Keeler (she/her) [:keeler]]

Ok - thanks. I'll see what comes of those bugs.

Comment 7

[Sylvestre Ledru [:Sylvestre]]

Moving to p3 because no activity for at least 1 year(s).
See https://github.com/mozilla/bug-handling/blob/master/policy/triage-bugzilla.md#how-do-you-triage for more information