These changes went out last week:
- Fixed bug where when a Cloudflare App that included a Worker was installed on a site that also included its own regular worker then sometimes responses would hang after having transmitted the entire response body (the terminating null chunk was never sent). The fix was actually in the open source KJ library: https://github.com/capnproto/capnproto/pull/820
- Fixed a bug in the preview which prohibited navigating to URLs containing invalid percent-escape sequences. The preview no longer attempts to decode these sequences.