The Search Window's search bar does not properly update the text when the text is changed

How to reproduce:
1. Create a new Unity Project
2. Open the Search Window
3. In the search bar type in "rendering debugger"
4. Repeatedly delete the last typed in letter and type it back in
5. Observe the Search Window

Actual result: The letter is deleted, added back in, and deleted again
Expected result: The letter is deleted

Reproducible with: 6000.5.0a5
Not reproducible with: 6000.0.66f1, 6000.3.5f1, 6000.4.0b5, 6000.5.0a4
Fixed in: 6000.5.0a6

Reproducible on: Windows 11
Not reproducible on: No other environments tested

Notes:

• This also happens when typing in new letters; sometimes they get deleted and typed back in
• The insertion point marker also jumps around when changing its position