chore: Release v0.50.4 - #2278
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Bumps the workspace version to 0.50.4 and dates the changelog section. Ships the v4 transaction extension version fix from #2277, so v4 extrinsics decode against extension version 0 rather than the newest version in the metadata. Polkadot Asset Hub from spec 2005000 exposes versions [0, 1] and was the first runtime to hit this.
pgherveou
approved these changes
Sep 11, 2026
The release entry only mentioned decoding, but the same wrong extension version broke signing too: v4 encoding resolves its extensions through the same call, so it was reaching for version 1 and failing on RestrictOrigins. Verified against Polkadot Asset Hub.
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Description
Patch release for the v4 transaction extension version fix in #2277. Polkadot Asset Hub from spec version 2005000 exposes transaction extension versions
[0, 1], and v4 extrinsics were being decoded against version 1's extension set, so they failed withVariantNotFoundand were dropped by anything iterating a block. Downstream report: paritytech/polkadot-rest-api#405.Everything since
v0.50.3:No API changes, so this is a patch.
Changes
Cargo.tomlbumps the workspace version to 0.50.4,Cargo.lockpicks that up across the 18 workspace crates with no dependency churn, andCHANGELOG.mddates the existing entry as[0.50.4] - 2026-09-11with a summary line.