We are experiencing an issue with possibility of tables with _tmp suffix might be dropped. These tables have to be in the same bucket, and there have to exist a table with the same name, just without the _tmp suffix. We found the root cause and we are working on a fix which might be deployed in 4 hours.
2022-07-27 11:17 UTC - We have deployed the fix of this issue. Affected customers were contacted directly. We'll undrop affected tables.
2022-07-27 16:34 UTC - We have fixed affected tables. The issue is now resolved. We are sorry for the inconvenience.