Steps to replicate the issue (include links if applicable):
- Switch to the 2010 source editor
- Either (A) go out away from civilization until you almost have no cell service, then connect through your mobile hotspot or (B) simulate a bad connection with a command like tc qdisc add dev wlan0 root netem loss 50%
- Go to a large page like https://en.wikipedia.org/wiki/United_States
- Click "edit", and make sure everything has finished loading
- Click "show preview"
What happens?:
Request from [redacted] via cp4043 cp4043, Varnish XID 406723674 Error: 503, Backend fetch failed at Sun, 28 Jan 2024 21:35:32 GMT
What should have happened instead?:
A preview is shown if all the data was received uncorrupted; otherwise a more meaningful error message is shown.
Other information (browser name/version, screenshots, etc.):
Happens to me in Firefox 121.0.1 (Linux) using the tc command above, on Debian 11. Has also happened to me "in the wild" in the past.