Description of Problem:
Once a partition is "created" in TUI custom setup, it cannot be modified.
To reproduce :
1 - start the installer as text
2 - select "custom" install
3 - select edit your own partitions
4 - create a partition
5 - attempt to change that partitions settings
6 - notice that the mount information is no longer editable
7 - attempt to save changed info
8 - get error
Not really able to replicate the error with the above steps, but I'm betting
this is related to #59581.
*** This bug has been marked as a duplicate of 59581 ***