Version Control's Branch Explorer Options window closes when attempting to Maximize it

Steps to reproduce:

1. Create a new project and set up Version Control Workplace
2. Open the Unity Version Control window (Window -> Version Control -> Unity Version Control)
3. Open the Branch Explorer window
4. Click on the Cog icon in the Branch Explorer window
5. Dock the opened Branch Explorer Options window
6. Right-click on the Branch Explorer Options window and select the "Maximize" option

Actual results: Branch Explorer Options window is closed instead of maximised. Depending on the Version Control package version used, a NullReferenceException is also thrown

Expected results: Branch Explorer Options window is maximised instead of closed. No warnings or Errors are thrown when attempting to maximise the window

Reproducible with versions: 2.12.4 (6000.0.82f1, 6000.1.0b1), 2.13.6 (6000.7.0a5)

Can’t test with versions: 2.6.0, 2.11.4 (Branch explorer not available as part of the VCS package)

Tested on (OS): macOS 26.6.2

Notes:

• NullReferenceException is thrown when using the 2.12.4 package version. On newer versions, the window is just silently closed