Created attachment 855777 [details]
Screenshot of the versionbit 2 error message on Leap 15.3

The Bitcoin Core client in Leap 15.3 (package bitcoin-qt5) is to old to parse
the latest block versions that are on the Bitcoin Core chain. Thus, it prints a
warning (roughly translated from German, see attached screen shot):

Warning, unknown new rules activated (versionbit 2)

Expected behaviour would be for the Bitcoin Core client in Leap to be able to
process all block versions that can be found on Bitcoin Core's main chain.

As per my understanding this would require updating Bitcoin Core to version
0.21.1 or later which introduced the taproot soft fork. This feature is
indicated by this version bit, see https://bitcoin.org/en/releases/0.21.1/.