In an open schematic editor, Save As onto a file that was still opening re-keyed the engine, then the late open replaced it with the disk content, losing any edit made after the Save As.
From the Grok pain-radar digest, Oct 25-26 2026 (Oct 25 daytime to Oct 26 morning slots). Verified live 2026-10-26: issue/PR read on GitHub; title and state confirmed.