2 COMM frames as follows:

43 4F 4D 4D 00 00 00 26 00 00 00 65 6E 67 53 4F 4E 47 53 2D 44 42 5F 50 52 45 46 45 52 45 4E 43 45 00 45 78 63 65 6C 6C 65 6E 74 20 63 6F 70 79
= language: eng
= description: "SONGS-DB_PREFERENCE
= data: Excellent copy

43 4F 4D 4D 00 00 00 1E 00 00 00 65 6E 67 4D 75 73 69 63 4D 61 74 63 68 5F 50 72 65 66 65 72 65 6E 63 65 00 50 4F 4F 52
=language: eng
= description: MusicMatch_Preference
= data: Poor

and 1 more COMM frame

= language: eng
= description: ""
= data: comment data

No matter what eyeD3 will not display the two COMM frames with descriptions. It always shows the COMM frame with an empty description.

-v mode only lists a single COMM frame.

According to the spec, multiple COMM frames are valid if they contains unique language and descriptions. Eyed3 will not parse them.

Confirmed with several other tools all COMM frames are parsed and displayed as expected. Kid3 for example.

The data in COMM frames is important and needs to be accessible.