Steps to reproduce:
1. Open a new or existing project
2. Create a Cube GO in the scene and select it so the components are visible in the inspector
3. Expand Materials dropdown in Mesh Renderer component
4. Open UI Toolkit Samples (Window -> UI Toolkit -> Samples)
5. Select Object Field sample
6. Click on the Material Object Picker in the Mesh Renderer component visible in Inspector
7. Click Object Picker icon on the UXML Field in the UI Toolkit Samples window

Expected results: Object Picker opens up next to the clicked icon
Actual results: Object Picker is redrawn and contents are updated, but the window itself remains in the same location where it was opened first

Reproducible with: 2019.4.36f1, 2020.3.30f1, 2021.2.13f1, 2022.1.0b8, 2022.2.0a7

Notes:
- On 2019.4.36f1 the Object picker spawns in the same place, no matter where from it was opened and clicking the Object Picker in another field would just close it
- Not reproducible on Mac