Forerunner 745 not recording VO2max; no training status

It appears that my Forerunner 745 has not recorded VO2max since early January, and training status continues to show 'no status', despite it having worked up until mid-December and having recorded five activities in the last nine days. It would appear from the forum that many others are having similar problems with other devices. See:

https://forums.garmin.com/sports-fitness/running-multisport/f/forerunner-935/280536/why-is-the-effort-and-vo2-max-no-longer-calculating-and-updating-in-connect/1365512#1365512

https://forums.garmin.com/outdoor-recreation/outdoor-recreation/f/fenix-6-series/284185/vo2-max-training-status-not-recording-fenix-6s-sapphire

https://forums.garmin.com/sports-fitness/running-multisport/f/forerunner-245-series/280412/no-training-status-running-track-mode-no-status-and-training-status-don-t-improve/1360475#1360475

My device is on firmware 6.20. The release notes claim "Fix an issue that could cause interference with Firstbeat driven metrics like Body Battery, VO2 Max, and Intensity Minutes." Perhaps this fix broke something else?

Can we expect a fix to these issues soon?