For the last few days, I have had problems using Garmin Connect (modern) on my MacBook Pro running Safari Version 14.1.2 (14611.3.10.1.5). I can load my Fitness dashboard, but the Activities widget doesn't appear, and if I click on Activities > All Activities in the sidebar, the main screen area goes blank. I get the same result if I click on Training > Workouts.
Everything works normally in Firefox, so the problem seems to be in the interaction of Safari with GC. Has anyone else experienced this problem? It was working normally until Wednesday or Thursday, I think.