How to reproduce:

1. Open the project “IN-102544_JitterTAA”
2. Move the Game View Tab to another screen
3. Click on the Game View or move the mouse on the little Camera in the Scene View
4. Observe the Game View

Expected result: No jitter/shake is present
Actual result: The GameObjects jitter/shake

Reproducible with: 2023.3.0b10, 6000.0.50f1, 6000.1.5f1, 6000.2.0b3
Could not test with: 2022.3.62f1 (URP 14 does not support Temporal Anti-aliasing)

Reproducible on: Windows 11, MacOS (M1)
Not reproducible on: No other environments tested

Notes:

• Recommended to move the Game View to a screen with Higher resolution than the screen with the Editor/Scene open
• The Main Camera → Rendering → Anti-aliasing is set to Temporal Anti-aliasing enabled
• The PC_RPAsset → Quality → Upscaling Filter is set to Spatial-Temporal Post-Processing
• TAA is officially supported from the 15.2+ URP versions What's new in URP 15 (Unity 2023.1)