1512139 - [Ubuntu] Youtube search icon moves when dragging mouse left-right

Status: NEW

(Core :: Web Painting, defect, P3)

Description

[Cristian Fogel [:cfogel]]

Attachment: 2018-12-05 11-36-31.mp4

[Affected versions]:
- 60.4esr, 63.0.3, 64.0b8, 65.0a1 (2018-12-04)

[Affected platforms]:
- Ubuntu 16.04

[Steps to reproduce]:
1. Launch Firefox;
2. Access https://www.youtube.com/
3. Click and hold on the Search button form youtube;
4. Move the mouse left-right;

[Expected result]:
- Button appears as pressed;
 *icon remains static(on other browsers and Win+macOS)

[Actual result]:
- the icon moves a few pixels (inside the button) left-right; 

[Regression range]:
using mozregression could only get as close as this frame:
- Last good revision: 5fe9ed3edd6811a662d40d05e37b0d66e9520d82 (2015-09-08)
- First bad revision: 0625c68c0abcfe4d10880d15d8fe7d06df3369c9 (2015-10-23)
*some good versions close to the frame, froze up after step 3

[Additional notes]:
- attached recording with the issue;

Comment 1

[Julien Cristau [:jcristau]]

Old regression, wontfix for <=64.