Is there a list of known bugs HSQL2.5

Hi there,

Had some trouble with a union query, did not want to work in HSQL backend. When I switched the backend to 2.3.2 it worked like a charm, however I think sticking with 2.3.2 may rob me of the temporal system version tables functionality.
Anyone else experienced problems with union queries in HSQL2.5 ?

Hello, seems like a problem in v2.5 as v2.4 works.

Also this is not an LO question - ask on HSQLDB site.