A family of Microsoft products that enable users to capture, organize, and reuse notes electronically.
When I said that I noted that the same issue occurs in Windows, I was referring to a similar-but-different issue. I have seen Windows in the past get "confused" about the state of a modifier key (like Ctrl or Alt), thinking that the key was being held down, and require that the key be pressed again for Windows to realize that it has been released. This is a rare occurrence, and when this happens, it is system-wide. The issue that I am complaining about right now is very specific to UWP OneNote. I don't have it in other apps. I have also tested, when OneNote is "confused" about the Ctrl key, I can switch to another program and find things working fine.
I do not have the issue with OneNote 2016. I know that this app has been sunset though so I would like to find a resolution for UWP OneNote.
I'll reiterate that I am experiencing this issue on two different PCs.
I did some more testing and found that if I close my main "large" notebook, then the issue goes away. (Just creating a new notebook is not sufficient since OneNote can have many notebooks "open" at once; I had to close the large one.) When I opened my large notebook back up (and waited for several minutes for everything to get back in sync), I was easily able to reproduce the problem again.
My large notebook has well over a thousand pages and subpages. Maybe its size is partly responsible for this issue? I make heavy use of this notebook from my home PC, work PC, and my phone. I'm not willing to change the way I keep things organized so I'd love to find a proper fix for this or somehow get it logged to the dev team so that they could take a look. I just found that it looks like there is an area in "Feedback hub" for this so I'll post there as well.