in case its of interest in order to prevent future such issues, we normally use a variation of the following constraint with all text questions, long or short.
regex (.,'^[A-Za-z0-9._؟?#&*/@;:؛÷×%$ لأآلإءأ-ي+-]{3,250}$')
it allows for a limited number of latin and arabic characters as well as a few symbols.
most importantly it prevents commas and other special characters which look to have caused your problem.
Addresses are usually the culprit as people naturally include commas and other unusual characters