I'm running MP3Tag 2.69. Under previous versions, I was able to view and change custom1 and custom2 tag fields. I believe these are ID3v2 fields.
I tried to map the fields via options -> tags -> mapping.
However, when I view a track and go to view -> customize columns, I do not see "custom1" and "custom1" and I do not see the names I mapped them to.
How do I make them visible?