1424614 - autoscroll instantly starts on middle click

Status: RESOLVED DUPLICATE of bug 1423810

(Core :: Widget: Gtk, defect, P5)

Description

[Denis Lisov]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:59.0) Gecko/20100101 Firefox/59.0
Build ID: 20171210100145

Steps to reproduce:

When autoscroll is enabled and I middle click on a long page, the autoscroll "compass" appears not right under cursor, but some distance above it, and the scrolling starts instantly. If I move the cursor to the center of the compass, scrolling stops as expected.

I've run mozregression and narrowed it to the landing of bug 1421794 ( https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=a27e933a27b65f220dabf6a5949ce15003485fd6&tochange=ed817bc6cc3bc2a11e9607afb3c5b52702ceb12a )

Comment 1

[Denis Lisov]

Sorry, landing of bug 1421974.

Comment 2

[Denis Lisov]

Forgot to mention initially that the desktop is Plasma 5.

Comment 4

[Andrew Overholt [:overholt]]

Maybe Martin can take a look (IIRC Plasma is KDE)?

Comment 5

[Martin Stránský [:stransky] (ni? me)]

(In reply to Denis Lisov from comment #0)
> User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:59.0) Gecko/20100101
> Firefox/59.0
> Build ID: 20171210100145
> 
> Steps to reproduce:
> 
> When autoscroll is enabled and I middle click on a long page, the autoscroll
> "compass" appears not right under cursor, but some distance above it, and
> the scrolling starts instantly. If I move the cursor to the center of the
> compass, scrolling stops as expected.
> 
> I've run mozregression and narrowed it to the landing of bug 1421794 (
> https://hg.mozilla.org/integration/autoland/
> pushloghtml?fromchange=a27e933a27b65f220dabf6a5949ce15003485fd6&tochange=ed81
> 7bc6cc3bc2a11e9607afb3c5b52702ceb12a )

Yes, that's caused by this commit. I wonder why fix for Bug 1423810 does not work for you as it disables the container drawing.

Complete fix is waiting for review at Bug 1424974.

Comment 6

[Denis Lisov]

(In reply to Martin Stránský [:stransky] from comment #5)
> Yes, that's caused by this commit. I wonder why fix for Bug 1423810 does not
> work for you as it disables the container drawing.
> 
> Complete fix is waiting for review at Bug 1424974.

Sorry, I had some system instability and had not updated Nightly since reporting the bug. Now I'm on Nightly 2017-12-19 and the bug is gone.

Comment 7

[Martin Stránský [:stransky] (ni? me)]

Great, Thanks.