Windows 10 OneDrive no Share in context menu

See if anything is blocked under Preferences / Miscellaneous / Advanced [Troubleshooting]: ignore_context_menus. Things that cause instability are sometimes added there automatically.

Beyond that, I'm not sure, but I'm inclined to suspect this aspect of OneDrive is unreliable since the menu item appears everywhere here but doesn't work anywhere, even in Explorer.

Edit: FWIW, I opened OneDrive's tray icon UI and the menu item then started working, including in Opus. All I did was open the UI and close it again.

Edit 2: Make sure you don't have Opus running as admin, as that'll break a lot of context menu items. It'll say ADMINISTRATOR in the titlebar if you are. (Can't see if it's there as the screenshot above is cropped.)