1450984 - Page position doesn't snaps back to the previous place while moving the mouse away from the scroll bar.

Status: RESOLVED INVALID

(Core :: Panning and Zooming, defect)

Description

[Oana Botisan, Desktop QA]

[Affected versions]:
- beta 60.0b9
- Nightly 61.0a1
- Firefox 59.0.2

[Affected platforms]:
- Mac OS 10.11
- macOS 10.13

[Steps to reproduce]:
1. Open a long test page (eg https://en.wikipedia.org/wiki/Facebook)
2. Scroll down to a lower position and remember it (eg "Scientific impact")
3. Select the scroll bar and drag it to the top of the page; do not release the mouse left button.
4. Move the mouse far to the left or the right of the scroll bar. 

[Expected result]:
- Page position snaps back to the previous place ("Scientific impact"), the mouse can be released.

[Actual result]:
- Page position doesn't snaps back to the previous place.

[Regression range]:
- I don't know if it's a regression, but if there is one, I will leave it in the comments as soon as possible.

Comment 1

[Oana Botisan, Desktop QA]

I managed to reproduce the bug using latest Nightly on Ubuntu 16.04 x64. So I am changing the affected platforms to ALL.

Comment 2

[Oana Botisan, Desktop QA]

I don't think this is a regression. I tested on an older version of Nightly 29.0a1 (2014-01-05) using Mac OS 10.10 and Ubuntu 16.04 x64 and the bug is still reproducing.

Comment 3

[Kartikaya Gupta (email:[e-mail])]

(In reply to Oana Botisan from comment #0)
> [Expected result]:
> - Page position snaps back to the previous place ("Scientific impact"), the
> mouse can be released.

This is not the expected result. That only happens on Windows. The behaviour in Firefox on macOS matches other macOS apps.