Steps to reproduce:

1. Create a new Unity project using Universal 3D template
2. Create a new Particle system (GameObject > Effects > Particle System)
3. Select the newly created Particle System in the Hierarchy window
4. Click the "Open Editor..." button in the Inspector window
5. Dock the Particle Effect window
6. Resize the docked Particle Effect window horizontally to the smallest possible
7. Observe the Particle Effect window while resizing

Actual results: The Particle Effect window tab slider is not smooth and jittering when resizing the docked window

Expected results: The Particle Effect window tab slider is smooth and no jittering is caused when resizing the docked window

Reproducible with versions: 2021.3.51f1, 2022.3.62f1, 6000.0.49f1, 6000.1.3f1, 6000.2.0b1 

Tested on (OS): macOS Silicon Sequoia 15.3

Notes:

• When the docked window is small horizontally, moving the mouse in the window causes the slider to jitter as well