Reproduction steps:
1. Open the attached “IN-103648.zip” project
2. Open the “SampleScene”
3. Select the “Cube” GameObject from the Hierarchy
4. In the Scene view toolbar, switch the Active Context to Probuilder (top icon on the left)
5. In the toolbar, switch to Face Selection tool
6. Click on any Face
7. Right-click > ProBuilder Select > Grow Selection (or Alt+G)
8. Then Right-click > Delete Faces (or Backspace)
9. Select any Face again
10. Repeat 7th step
11. Observe the “Cube” GameObject

Expected result: Additional Faces are selected
Actual result: All of the changes made in between “Grow Selection” operations are reverted back

Reproducible with: 6.0.1-pre.1, 6.0.5 (6000.0.50f1, 6000.1.6f1, 6000.2.0b4)
Not reproducible with: 5.2.4 (2022.3.63f1)

Reproducible on: Windows 11
Not reproducible on: no other environment tested

Notes:
- If the “Undo History” Window is open while reproducing the issue, it will be visible how all of the changes are deleted momentarily once “Grow Selection” is used for the second time
- If any other changes are made in between 8-9th steps, like modifying any other GameObject in the Scene or the “Cube” GO itself, all of those changes are also reverted, which can cause loss of a lot of work
- Does not matter what kind of operation is performed on the 8th step, as long as it has some kind of modification