1457429 - The doorhanger from certain add-ons goes blank when showing the browser window in full screen

Status: NEW

(WebExtensions :: Frontend, defect, P3)

Description

[Cristina Badescu [:cbadescu], Experiments QA]

Attachment: Blank doorhanger.gif

[Affected versions]:
- Firefox 59.0.2 and up
- Side View 0.3.2

[Affected Platforms]:
- All Windows

[Prerequisites]:
- Have a clean Firefox profile with the latest Side View v0.3.2 installed (https://github.com/mozilla/side-view).
- The browser was previously resized.

[Steps to reproduce]:
1. Open the browser and click the "Open Side View" toolbar button.
2. Press "F11" key and observe the "Side View" doorhanger.

[Expected result]:
- The doorhanger renders correctly with the fullscreen state.

[Actual result]:
- The doorhanger goes blank.

[Notes]:
- This issue is also reproducible for the "Snooze Tabs" add-on, see bug https://github.com/bwinton/SnoozeTabs/issues/439.
- This is also reproducible with the populated panel.
- This issue is not reproducible for the "Library" doorhanger.
- Attached a screen recording of the issue.

Comment 1

[David Durst [:ddurst]]

Extension popup should be dismissed.

Comment 2

[Remus Dranca [rdranca], Ecosystem QA]

I have managed to reproduce this issue on Latest Nightly 65.0a1 (Build ID 20181101100640) with Email Tabs experiment. It is an experiment that will be shipped on the Test Pilot platform this month.
This issue affects multiple webextension and seems to be an old regression. Testing the mozregression tools I have managed to get a pushlog: https://tinyurl.com/y7sljqou.
Unfortunately, I didn't manage to go further since there are very old builds. So probably one of the issues from the pushlog introduced this.