Insertion Point jumps to the end of the string when editing text in the Add New Selector input field

Steps to reproduce:

1. Open the attached project
2. Open the Test UI Document
3. In the StyleSheets tab Paste the following Selector name "#root > #ContentContainer > #NestedContainer1 > #NestedContainer2 >.unity-label"
4. Set the Insertion point somewhere in the middle of the string
5. Start typing

Actual results: The first symbol is added to the point where the insertion point was set, however, the follow-up symbols are added to the end of the string

Expected results: The text insertion point does not jump to the end of the string while typing

Reproducible with versions: 2022.3.63f1, 6000.0.51f1, 6000.1.7f1, 6000.2.0b5

Tested on (OS): macOS 15.5