1353389 - 3 Different scroll bars are displayed at the bottom of the Details panel

Status: VERIFIED FIXED

(DevTools :: Netmonitor, defect, P1)

Description

[Emil Ghitta, QA [:emilghitta]]

Attachment: Request Details scroll bars.gif

[Affected versions]:
Firefox 55.0a1 (Build Id:20170404030204)

[Affected platforms]:
Mac OS X 10.12.
Ubuntu 16.04 64bit.
Windows 10 64 bit.

[Steps to reproduce]:
1. Launch Firefox.
2. Access the https://en.wikipedia.org/wiki/United_States webpage.
3. Open the network monitor panel.
4. Open the request details panel.
5. Shrink the request details panel.
6. Observe that there are 3 different scroll bars displayed at the bottom of the panel.

[Expected result]:
1 scroll bar is displayed at the bottom of the panel.

[Actual result]:
There are 3 different scroll bars at the bottom of the panel.

[Regression range]:
This seems to be a recent regression:

Last good revision: 3600f94a4c71ff70ed941e21dc497e4ad73e2ec4
First bad revision: 1379bfa0f9217effd4c0a8cc70c1c1f1c2afb339

Pushlog:
https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=3600f94a4c71ff70ed941e21dc497e4ad73e2ec4&tochange=1379bfa0f9217effd4c0a8cc70c1c1f1c2afb339

I may be wrong, but I think that the following bug may have lead to this outcome:
https://bugzilla.mozilla.org/show_bug.cgi?id=1350234


[Additional information]:
Please observe the attached video for more details

Comment 1

[Tim Nguyen :ntim]

Attachment: Bug 1353389 - Fix network monitor sidebar panel scrollbars.

Review commit: https://reviewboard.mozilla.org/r/126754/diff/#index_header
See other reviews: https://reviewboard.mozilla.org/r/126754/

Comment 2

[Jan Honza Odvarko [:Honza] (always need-info? me)]

Comment on attachment 8854770 [details]
Bug 1353389 - Fix network monitor sidebar panel scrollbars.

https://reviewboard.mozilla.org/r/126754/#review129520

Great, the patch fixes the problem on my machine, thanks Tim!

Honza

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/303ccd426244
Fix network monitor sidebar panel scrollbars. r=Honza

Comment 4

[Wes Kocher (:KWierso) (Not reading bugmail; email directly if needed)]

https://hg.mozilla.org/mozilla-central/rev/303ccd426244

Comment 5

[Emil Ghitta, QA [:emilghitta]]

I have verified that this issue is not reproducible anymore using Firefox 55.0a1 (Build Id:20170409123541) on Mac OS X 10.12, Ubuntu 16.04 64bit and Windows 10 64bit.