If someone please explain what is going on in the midi editor here
https://imgur.com/a/IzEpdqn
It looks like I can see notes of all selected midi items on one track, but on the other track I can only see notes of the clicked item, the other items just disappears from view ; and the displayed notes are not even located correctly at the actual position, they are shifted to bar 1. Then you move the problematic midi items to the "good" track and apparently they are displayed fine, move them back to the bad track, some selections work , others not...just weird behavior.
Is this some setting you can tweak in the options? I would like to think it's not, it doesn't make much sense from that gif.