We have discovered a regression in grpc-xds starting with 1.51.0 where resources might stop receiving updates. The trigger could happen hours or days after the binary had started. xDS users should avoid 1.51.0, 1.51.1, and 1.52.0. We suggest using 1.50.x until patch releases with the fix are available.
The bug should generally not cause resources to be missing, but instead out-of-date. This most easily impacts EDS, which would cause backend IP addresses to become stale. But config changes in general might not be seen by grpc-xds.