Bitcoin Core 32 can stall multisig signing on older nodes as fix slips to next patch
Summary
Bitcoin Core 32.0’s graphical wallet creates PSBT v2 transaction files that older Core wallets and the joinpsbts RPC cannot import, potentially blocking mixed-version co-signing. The compatibility issue was moved to the 32.1 milestone, and a proposed GUI fix to restore v0 output remained open as of Oct. 22. Users can select PSBT v0 through Core 32’s RPC interface. A signed 32.0 source tag existed, but the official download page still listed version 31.1 at the time.
