Bug TMPInputField + CustomValidator + iOS/Android build = super strange behaviour

Hi All,
I've got a weird bug where any TMP Input Field that has a custom validator attached to it causes this weird behaviour when built to either Android or iOS.
Nature of the behaviour:

• Duplicates the existing text
• Won't let me delete it
• Only happens with Custom Validators AND iOS/Android Builds. Testing in editor or just choosing one of the pre-set validators does not produce this issue.

Notes about the project and what I've tried:

• Making an AR project with AR Foundation.
• The input field pictured in the video is as default as you can get. Not apart of any prefabs and no custom scripts affecting it.
• Tried both my own as well as unity's example validators. Behaviour is produced with all custom validators.
• Testing in the editor works exactly as you would expect.

Any guidance on this issue would be super helpful!

 

Bump. Facing the issue with TextMeshPro 3.0.6 and unity 21.3.26f1.

Edit: Fixed it by upgrading to preview TextMeshPro version 3.2.0-pre.4