Shortened filenames when download all submission

When a teacher/manager download all submission in a zip, Moodle
generates really long filenames like:
Participant_12345_assignsubmission_file_originalfilename.suffix
the new filename will be like:
Pt_12345_asm_file_originalfilename.suffix
it means minus 22 characters :)
It also works when you upload multiple feedback files in a zip