Good evening, as supposed by daaceking I opened a ticked cause of missing mp4 chapter support in 2.2.0.
However, the ticket was closes with the comment, Apple Chapters were crap - I reopened it now with the remark that the same problem appears also with mp4's generated with DVDFab with constant bitrate.
However, could please someone clarify if or if not a fix will be provided on that topic - I'm not that superuser regarding ticketing.
Here's the path to the ticket:
https://trac.videolan.org/vlc/ticket/14045