Hi YuFL,
Query#:- You can
reproduce the problem by clicking the 2 buttons at the bottom of the table.
Further
analyzing the issue, while changing the Frozen column dynamically, width of the
columns in column definition remains the same(only it show the changes in UI)
because column will be added to Frozencontent (but the same width will be
maintained) and remaining columns will be in movable content which is behavior.
Screenshot:-

Apart from this, if you have faced any other issue, please
share Video Demo or any other in order to proceed further.
Regards,
Farveen
sulthana T