The Editor freezes and a “OutOfMemoryException” error is thrown when entering a big number into the Auto Tile’s Used Textures list element count input field

Steps to reproduce:

1. Create a new Unity project using the Universal 2D template
2. Create a new Auto Tile (Assets > Create > 2D > Tiles > Auto Tile)
3. Select the newly created Auto Tile in the Project window
4. Expand the Used Textures foldout
5. Enter "999999999" in the Used Textures element count input
6. Press Enter
7. Observe the Editor

Actual results: The Editor freezes and "OutOfMemoryExceotion" error is thrown

Expected results: The Used Textures list has a maximum element count limit

 

Reproducible with versions: 6000.3.10f1, 6000.4.0b9, 6000.5.0a7

Can’t test with versions: 6000.0.68f1 (due to no Auto Tile)

Tested on (OS): MacOS Silicon Tahoe 26.2

Notes:

• Tile Rule and Animated Tile have a limit of 1000 on similar lists which prevent this issue