Created attachment 826808 [details]
Screenshot of the block-version warning message (German language)

The Bitcoin Core client in Leap 15.1 (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 block version is being generated by mining. It might be
possible that unknown rules are in effect.

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.