In the modes "Album Covers" and "Artists" does not work grouping for the tracks.

[Sofocl]

MB 3.1.6238

[Sofocl]

When you enable grouping for the tracks appear visual glitches.
Also, the grouping is not saved when you restart MB.

Here is a more accurate GIFs of what is happening;
MB 3.1.6240

[Steven]

the bug for the first issue is fixed for the next v3.1 update. For the second issue, i think its probably the same thing

[Sofocl]

the bug for the first issue is fixed for the next v3.1 update.

MB 3.1.6244
Thank you, it's fixed!

For the second issue, i think its probably the same thing

The second error is not solved, and related error in the mode "Album Covers" and "Artists" are not saved fields "Set Displayed Fields ...".

[Steven]

The second error is not solved, and related error in the mode "Album Covers" and "Artists" are not saved fields "Set Displayed Fields ...".

that should be fixed for the next v3.1 update

[Steven]

http://musicbee.niblseed.com/V3_1/MusicBee31_Patched.zip

[Sofocl]

The second error is not solved, and related error in the mode "Album Covers" and "Artists" are not saved fields "Set Displayed Fields ...".

that should be fixed for the next v3.1 update

It is fixed but not completely.
If changes are made to the tab "Playlists" behavior remains the same, "Group by" and "Set Displayed Fields ..." is not saved when you restart MB.