Steps to reproduce:
# Create a new Unity project using the Universal 3D template
# Select the "Global Volume" GameObject in the Hierarchy window
# Click on the Tag dropdown in the Inspector window
# Select "Add Tag..."
# Click on the "+" button to add a tag and hold Enter to add around 10-15 tags
# Select a Tag somewhere in the middle
# Click on the "-" button to remove the tag and then hold Enter to remove many tags
# Observe the Console window

Actual results: NullReferenceException”, and "Retrieving array element that was out of bounds" errors are thrown

Expected results: No errors are thrown

Reproducible with versions: 6000.0.1f1, 6000.0.58f1, 6000.2.6f1, 6000.3.0b3 

Not reproducible with versions: 6000.0.0f1

Can’t test with versions: 2022.3.66f1 (due to Enter key not having the same functionality)

Tested on (OS): macOS Silicon Sequoia 15.6.1