Bugzilla

**Found in**
* 138.0a1 (2025-03-28)





**Affected versions**
* 138.0a1 (2025-03-28)


**Tested platforms**
* Affected platforms:  Windows 10x64, Ubuntu 24, macOS
* Unaffected platforms: none


**Preconditions**
* sidebar enabled
* vertical tab enabled
* expand on hover enabled
* sidebar placed on the left side


**Steps to reproduce**
1. Hover over the sidebar launcher and, after some time move the mouse right and left.

**Expected result** 
* The sidebar launcher does not expand and collapse.


**Actual result**
* The sidebar launcher collapses and opens.

**Regression range**
* Not a regression. New feature.

**Additional notes**
* Attached a screen recording.
* Note that this is time-dependent because the issue does not reproduce only if the mouse is moved at the right time.

**Found in**
* 138.0a1 (2025-03-28)





**Affected versions**
* 138.0a1 (2025-03-28)


**Tested platforms**
* Affected platforms:  Windows 10x64, Ubuntu 24, macOS
* Unaffected platforms: none


**Preconditions**
* sidebar enabled
* vertical tab enabled
* expand on hover enabled
* sidebar placed on the left side


**Steps to reproduce**
1. Hover over the sidebar launcher and, after some time move the mouse right and left.

**Expected result** 
* The sidebar launcher does not expand and collapse.


**Actual result**
* The sidebar launcher collapses and opens.

**Regression range**
* This might be a regression from bug 1950419. Before this bug, I could only see a similar issue, and I could expand and collapse the sidebar a maximum of two times. Please remove it if you feel otherwise.

**Additional notes**
* Attached a screen recording.
* Note that this is time-dependent because the issue does not reproduce only if the mouse is moved at the right time.

**Found in**
* 138.0a1 (2025-03-27)





**Affected versions**
* 138.0a1 (2025-03-27)


**Tested platforms**
* Affected platforms:  Windows 10x64, Ubuntu 24, macOS
* Unaffected platforms: none


**Preconditions**
* sidebar enabled
* vertical tab enabled
* expand on hover enabled
* sidebar placed on the left side


**Steps to reproduce**
1. Hover over the sidebar launcher and, after some time move the mouse right and left.

**Expected result** 
* The sidebar launcher does not expand and collapse.


**Actual result**
* The sidebar launcher collapses and opens.

**Regression range**
* This might be a regression from bug 1950419. Before this bug, I could only see a similar issue, and I could expand and collapse the sidebar a maximum of two times. Please remove it if you feel otherwise.

**Additional notes**
* Attached a screen recording.
* Note that this is time-dependent because the issue does not reproduce only if the mouse is moved at the right time.

**Found in**
* 138.0a1 (2025-03-27)





**Affected versions**
* 138.0a1 (2025-03-27)


**Tested platforms**
* Affected platforms:  Windows 10x64, Ubuntu 24, macOS
* Unaffected platforms: none


**Preconditions**
* sidebar enabled
* vertical tab enabled
* expand on hover enabled
* sidebar placed on the left side


**Steps to reproduce**
1. Hover over the sidebar launcher and, after some time move the mouse right and left.

**Expected result** 
* The sidebar launcher does not expand and collapse.


**Actual result**
* The sidebar launcher collapses and opens.

**Regression range**
* This might be a regression from bug 1950419. Before this bug, I could only see a similar issue, and I could expand and collapse the sidebar a maximum of two times. Please remove it if you feel otherwise.

**Additional notes**
* Attached a screen recording.
* Note that this is time-dependent because the issue does not reproduce only if the mouse is moved at the right time.
* The sidebar expands and collapses rapidly when the mouse is quickly moved away from the sidebar launcher when the expand animation starts.