Issues with/Advice for Calendar views of modern lists

Andrew Hodges , thanks for the feedback. According to this UserVoice suggestion, it looks like there aren't any current plans to implement modern Calendar views. This is discouraging. 

In any case, the good news is that I was able to at least get the calendar views to show up consistently by changing the List experience to "Classic". The bad news is that this means no modern views at all of the list, and all of the classic views have a "New" button at the top which completely bypasses the App and the customized form for the list. I was also able to create a Flow that will run when a leave entry is created directly in the list (not the App) to notify the submitter and then delete the event. 

It's just very frustrating to end users (and us IT folks) when functionality is lost during "upgrades" to products. Don't get me wrong, there's a lot of good stuff in the whole "modern" experience, but the things that are missing are the ones that folks then to latch onto.