Pages spelling hangs
When I select either Edit > Spelling and Grammar > Check Document Now or Edit > Spelling and Grammar > Show Spelling and Grammar within Pages for Mac, the program hangs displaying a spinning rainbow beachball cursor. According to Activity Monitor, the app is consuming ~100% CPU and is not responding, necessitating that I Force Quit it.
I've also submitted this as a bug report using the Pages > Provide Pages Feedback menu item.
MacBook Pro 15″, macOS 11.6