Like the others who reported this issue, my Sentry instance has suddenly stopped showing events in the UI. I have a few different projects configured and when I open any of them, I get a message saying no issues could be found matching my filters.
In another thread, someone suggested bringing down the Docker Compose stack and clearing out certain directories from the Kafka volume. I tried that out but its still the same.
I am running 10.1.0.dev0 on EC2.