Tracks not sorted in order when ordering by tracks with letters

[steveman1123]

Steps to reproduce the problem

Load playlist with id3v2 tag TRCK with alphanumeric values (e.g. 01a, 01b, 02a, 02b, ...) Ensure display columns are at least Track, Album, Artist Sort playlist by ascending order first by artist, then by track, then by album (additional sorting other than by track may not be necessary)

Expected Results

Tracks are sorted in correct ascending order by track (e.g. 01a, 01b, 02a, 02b, ...)

Actual Results

Tracks are sorted correctly numerically, but not correctly by their letters (sort order is as 01b, 01a, 02b, 02a, ...)

Information about the software:

Deadbeef version: 1.9.4 OS: Ubuntu 22.04.1 LTS