Magic Keyboard (12.9 iPad Pro) Inconsistent

I’m finding very inconsistent behavior from the Magic Keyboard, depending on the app. I was on a site replying to a topic and I had to hit Opt-Space in order to get a space (using Safari, if that makes a difference). Using Space alone did nothing. In Agenda, the space either highlighted the block I was in, if it was not already highlighted or it gave me a dropdown menu to Select or Select All. I tried it on Drafts and Word and it works fine. Sometimes, the arrow keys work as you would expect. Other times, they cause the cursor to jump to other parts of the page or not respond at all.

It’s hard to pin down exactly where and when it happens. I’m just curious if others are experiencing this general behavior.