Steps to replicate the issue (include links if applicable):
https://integration.wikimedia.org/ci/job/selenium-daily-beta-Popups/ began failing despite no changes ot the code. I'm seeing:
- 08:25:51 node: ../src/coroutine.cc:134: void* find_thread_id_key(void*): Assertion `thread_id_key != 0x7777' failed.
The browser tests seem to be passing unless I'm reading them incorrectly?