Hex change history: Issues using 3.11 custom images

Hex reported a major Kernels incident affecting 3.11 custom images: projects could acquire a kernel but could not query data sources. It started at 2025-11-07 15:07 UTC and was resolved at 2025-11-07 19:28 UTC, lasting 4 h 21 min; Hex identified the issue and reported implementing a fix.