Emil Ghitta, QA [:emilghitta] Reporter
	Description • 6 years ago

[Affected versions]:
59.0a1 (BuildId:20180108220132)
58.0b14 (BuildId:20180103230655)
57.0.4 (BuildId:20180103231032)

[Unaffected versions]:
52.5.3 esr (BuildId:20171226003912)

[Affected platforms]:
Windows 10 64bit.
Ubuntu 16.04 64bit.
macOS 10.12.

[Steps to reproduce]:
1. Launch Firefox with a clean profile.
2. Access the following link: https://app.nuclino.com/login.
3. Sign in with the following test account: emilgtesting@gmail.com (username) mozillatest (password).
4. Click on the "More" menu.

[Expected result]:
The menu opens smoothly.

[Actual result]:
A small glitch can be observed (The menu looks as if it is opening twice).

[Regression range]:

This seems to be a regression:

Last good revision: 19f92c04608cec275dab73e8acad5141de8a5c44
First bad revision: 57ff68e8e3fc476bbe5bc73addcca13bb5ce0097

Pushlog:
https://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=19f92c04608cec275dab73e8acad5141de8a5c44&tochange=57ff68e8e3fc476bbe5bc73addcca13bb5ce0097

[Additional notes]:
For further details regarding this issue please observe the attached screencast.

Please feel free to change the product or component if necessary.

	Emil Ghitta, QA [:emilghitta] Reporter
	Comment 1 • 6 years ago

Hi Gabriel, It seems that mozregression pointed out Bug 1384976 (which may have caused this regression).

Can you please have a look into this?

Thanks!

	Gabriel Luong [:gl] (ΦωΦ)
	Comment 2 • 6 years ago

This css change in Bug 1384976 only changed the styles for the Rules view in devtools and should not affect normal Firefox activity. Clearing needinfo since my changes are not causing this regression.

	Andreas Farre [:farre]
	Comment 3 • 6 years ago

Has something happened with the app, I can't reproduce the effect you describe. I tested on my locally built version on linux, and 57 on Windows 10, both on fairly fast machines. Emil, do you still see it?

	Emil Ghitta, QA [:emilghitta] Reporter
	Comment 4 • 6 years ago

I can confirm that this issue is no longer reproducible. (Tried reproducing it with Fx 57 and Fx 59 using Windows 10 and macOS 10.11).