API Length Limiter

Your software
My Mautic version is: 4.4.4
My PHP version is: 7.4
My Database type and version is:

Your problem
My problem is:

I am trying to create / update a contacts custom field which when created was set to varchar(191), so when I try and add in more than 191 characters it responds with errors.

{"errors":[{"code":400,"message":"btag: This value is too long. It should have 191 characters or less.","details":{"btag":["This value is too long. It should have 191 characters or less."]}}]}

If I extend this field in the database to 256, it still gives the same error message

These errors are showing in the log:

Steps I have tried to fix the problem: