For example, wrangler dev just stopped working on all my current workers. All requests return a timeout error.
Only workers created with wrangler generate work.
I opened this issue and never received an answer:
https://github.com/cloudflare/wrangler/issues/2077
I closed it because wrangler dev still works with generate, so I assumed it was a problem on my end.
It still sucks that it just stopped working for no reason.