Notes

Short writeups on bugs I found and fixed in open source. Each one links to the merged PR.

• wailsapp/wails2026-05-16

  A nil panic in Wails when you Quit before Run

  Someone called Application.Quit on a wails app before Run had built the inner application. The framework punished it with a panic. Easy fix.

• jackc/pgx2026-05-16

  A stale context bug in pgx's connectPreferred

  Reading pgconn's connection setup, I found a context variable leaking out of a for-loop and into the fallback path, where it would already be expired.

• nats-io/nats.go2026-05-15

  Empty tokens slipping past nats.go's KV key validator

  Keys like foo..bar contain an empty token, which makes them invalid NATS subjects. The client validator missed them. The server then returned a misleading error.