Current HR Not Showing on GCM Tile (But shows every where else)?

Don't know if this was a problem before installing 10 last night, but don't think so. Been wearing my F5+ for a few days, but just switched back to F5 after upgrading to 10 last night. Garmin Fenix 5 running 10.0, and iPhone 8 Plus on 11.4.1.

Today I just get "--" in current HR in the app tile. Watch shows current HR on watch face, in HR widget. GCM mobile app also shows HR history graph, and HR is copied to Health app as expected.

If I switch to my F5+ (version 4.2 also installed last night), it shows current HR in GCM tile and not "--". Restarted phone, GCM app, and watch with no success. F5 won't show current HR in tile.

Any suggestions?

Edited to add: All other metrics updating in GCM tiles as expected (steps, sleep, run activity today using F5, intensity minutes). Just no current HR.