In solidcraft a 48 mm extrude with Join failed with the join could not be computed reliably, while the same extrude as a new body worked. The kernel refused rather than keep a wrong result, and the message warns the preview may still show the last valid geometry.
From the Grok pain-radar digests, Nov 1-2 2026 (Nov 1 8:41 AM ET through Nov 2 7:41 AM ET digests plus the Haitch editions). Verified live 2026-11-02: issue/PR read; title and state confirmed.