Unity Issue Tracker - Deleting multiple Tags throws “NullReferenceException”, and "Retrieving array element that was out of bounds" errors when holding the Enter key

Fixed

Fixed in 6000.0.63f1, 6000.2.14f1, 6000.3.0f1, 6000.4.0a6, 6000.5.0a2

Votes

Found in

Issue ID

Regression

Deleting multiple Tags throws “NullReferenceException”, and "Retrieving array element that was out of bounds" errors when holding the Enter key

-

Sep 19, 2025

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