1424615 - Infinite loop when using + zoom in about:addons page

Status: REOPENED

(WebExtensions :: General, defect, P5)

Description

[juraj.masiar]

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:58.0) Gecko/20100101 Firefox/58.0
Build ID: 20171207170405

Steps to reproduce:

1) Install Group Speed Dial:
https://addons.mozilla.org/en-US/firefox/addon/groupspeeddial/
2) go to "about:addons" page
3)
  a) zoom to +160% or more
OR
  b) zoom to +110%, close the tab and reopen it again


Actual results:

Page starts to increase height indefinitely consuming one whole CPU thread.
This infinite loop can be broken only by resetting zoom and closing the tab.


Expected results:

Normal zoom.

Firefox Nightly is affected as well.

There is also second less serious issue - when you use minus zoom and then back plus zoom, the elements of the Options page of the add-on won't change back, they stay small.

Comment 1

[Andrew Swan [:aswan]]

I am unable to reproduce this with Nightly on macosx.  Can you reproduce this starting from a new profile?  And can you attach a video of what you're describing?

Comment 2

[juraj.masiar]

Video using clean profile using 58.0b10 (64-bit) on Windows 10:
https://youtu.be/Luh3eQVgUZc

The second bug with the minus zoom seems to be fine in clean profile.

Also this seems to be Windows specific as I was not able to reproduce it on Ubuntu.

This issue was reported to me by someone else so it's not just on my PC.

Comment 3

[CosminB]

Attachment: Bug1424615.gif

I can reproduce this issue on Firefox 57.0.2 (20171206182557), 58.0b11 (20171211020921) and Firefox 59.0a1(20171211220110) under Win 7 64-bit.

I could not reproduce this issue on Ubuntu 16.04 32-bit.

Please see the attached video.

Comment 4

[Andrew Swan [:aswan]]

Cosmin, can you check if this was fixed by the fix for bug 1424835?

Comment 5

[CosminB]

Attachment: Bug1424615.gif

Sure Andrew,

Unfortunately, the issue is still there, please see the attached video.

Tested on Nightly on Firefox 59.0a1 (20171217220404) under Win 7 64-bit.

Comment 6

[Mark Striemer [:mstriemer]]

This UI has been rewritten in HTML. Can't reproduce this issue in the new version.

Comment 7

[juraj.masiar]

I can still reproduce it in current Developer Edition 74.0b9 (64-bit).
You can't reproduce it only because I've disabled my options page in the "about:addons" page for my addon.
If you install some very old version of my addon, you will be still able to reproduce it, for example 8.6:
https://addons.mozilla.org/en-US/firefox/addon/groupspeeddial/versions/

Comment 8

[Mark Striemer [:mstriemer]]

Interesting, I would've expected this to be fixed by bug 1610227 if it was happening at all, but it looks like that fix only works at 100% zoom level and increasing the zoom will still cause the bug.