Well, that is a possibility. I haven't updated Office, still running 2016, but given how integrated Microsoft has tried to make OneDrive they could have changed something under the hood in Windows 11 that is causing that behaviour?I see similar behaviour occasionally with my browser first thing in the morning and I believe it's an issue with the wifi driver not waking properly after sleep. Any chance all of the apps you're seeing this on are somehow web connected and don't open until they've managed to get online access? (As in Office apps all wanting to confirm onedrive availability).
This is happening on my main PC and it's wired, but anything is possible. I'll try to test a bit more.