Woops. Experimental paginator that I should have removed. The new mobile menu isn't really compatible with it at all
#4 this has been raised recently, my suggestion was to remove read notifs from the mobile menu, or add a new badge like the chat section does
#5 might be a different bug. Notifs don't load if you slide to open the menu
Need to add localStorage to it, but also an option to re-enable in the user settings in case you accidentally closed it and actually do want it activated.
In any case, noticed OP is on an iPad, so made some changes that might work for him