Cristian Fogel [:cfogel] Reporter
	Description • 6 years ago

[Affected versions]:
- 62.0.3 , 63.0b13, 64.0a1 (2018-10-11) 

[Affected platforms]:
- Ubuntu 16.04

[Steps to reproduce]:
1. Launch Firefox with a clean profile;
2. Turn on the Tracking Protection / Content blocking feature-option;
3. Access any webpage with trackers, ex: https://www.reddit.com/
4. Grab the browser and drag it to right;
5. Hover the mouse over the back button;
6. Left click and move up-down.

[Expected result]:
- after step 5: mouse icon should remain to the default one;
- after step 6: dropdown "jumps" up-down, is broken;

[Actual result]:
- after step 5: mouse icon changes to the resize one;
- after step 6: nothing;

[Regression range]:
- not a regression;
- introduced with bug 1462468 - implementation of feature;

[Additional notes]:
- attached screen recording with the issue;
- for content blocking, the block 3rd party cookies option needs to be checked as well;
- summary can be updated if both issues can be fixed here or another bug needs to be open for one of them;

	François Marier [:francois]
	Comment 1 • 6 years ago

That seems like a general doorhanger bug, but I'm not sure which component it should go into.