How to reproduce:
1. Create and open a new 3D project
2. Create an “Audio Mixer” Asset (Create → Audio → Audio Mixer)
3. Double-click the created asset
4. Dock the “Audio Mixer” window
5. Open and dock the “Project” window
6. With “Audio Mixer“ and “Project“ tabs open, try clicking on the Audio Mixer tab and dragging the mouse cursor to the “Project” tab
7. Observe the tree view of folders present in the “Project” tab

Actual result: Spacing between folder icons and the folder names repeatedly expands and collapses
Expected result: Spacing between folder icons and the folder names does not change

Reproducible with: 6000.3.0a3, 6000.3.6f1, 6000.4.0b7, 6000.5.0a6
Not reproducible with: 6000.0.66f2, 6000.3.0a2

Reproducible on: macOS 26.2 (M1 Silicon), Ubuntu 22.04
Not reproducible on: Windows 11