This doesn't really surprise me. We use CloudSQL at my work (Sourcegraph) and have run into all sorts of weird issues actually putting it into production, e.g. segmentation faults when turning on Query Insights (which, lol, is supposed to give insight into why your DB might be behaving poorly.)

For the most part it works okay and is fine, but there have definitely been a fair number of quirks..

https://issuetracker.google.com/u/2/savedsearches/559773?pli...