It would be great if mp3tag would support sorting by Album tag in a future release.
Currently it is either not supported or not working properly. See screenshot.
The sorting also does not change on changing from ascending to descending or vice versa.
Especially when applying album covers to multiple albums of the same artist this feature would be really helpful.
I wonder that this issue is not yet implemented or fixed, because it is a basic and simple one.
With all other tag-columns the sorting works fine, as far as I have seen it.