I am trying to limit the area that a text box area can expand. Unfortunately It can be expanded outside the range of the container and if the corner grab button is let go it is stuck outside the range of the container and cannot be grabbed again.
I’ve tried to place it in a container but that doesn’t work.
Thank you for reporting this. I’ve been able to recreate the issue and I’ll get it fixed. When the fix is live, it will only affect new apps.
But you can fix existing apps by adding to the app’s theme.css file. Ctrl + F for textarea to find something that looks like this (depending on the theme you are using):