Reported as offline in metrics, some bridges are online and running

Since last week, some bridge operators are reporting that their bridge is 'offline' in Metrics, but they are online and running.

I can confirm that this is happening. One of my bridges is marked as offline, but on the tor logs I see:

Nov 28 12:02:57.000 [notice] Heartbeat: Since last heartbeat message, I have seen 200 unique clients.

Other messages on the logs:

Nov 20 12:23:29.000 [notice] Guard bauruine ($5B83DC983406651A0B4F6AE1940793CDD6A6F92E) is failing more circuits than usual. Most likely this means the Tor network is overloaded. Success counts are 198/283. Use counts are 63/63. 227 circuits completed, 0 were unusable, 30 collapsed, and 5 timed out. For reference, your timeout cutoff is 324 seconds.

Nov 20 23:04:10.000 [notice] Our directory information is no longer up-to-date enough to build circuits: We're missing descriptors for 1/3 of our primary entry guards (total microdescriptors: 5983/6034). That's ok. We will try to fetch missing descriptors soon.

Nov 21 03:24:31.000 [notice] Guard rixtyminutes ($01AE2DE314276C82FCCC3603A1C2F3238E6544C9) is failing more circuits than usual. Most likely this means the Tor network is overloaded. Success counts are 109/156. Use counts are 37/37. 132 circuits completed, 0 were unusable, 23 collapsed, and 5 timed out. For reference, your timeout cutoff is 324 seconds.

Reddit: https://www.reddit.com/r/TOR/comments/z2o7ro/bridge_metrics_showing_offline/