A 3MF package built for a real Bambu A1 printed fine but showed no plate preview anywhere because plate thumbnails were never written; separately, the designer's support_threshold_angle of 35 came out as 30 in the sliced G-code while every other designer setting carried over.
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.