On various sites across the network, users have reported that they are unable to move comments to chat when the system detects 'extensive discussion', and no error message is visible.
- Attempting to move comments to chat gives me an empty red box (Politics.SE, with information from the browser console)
- Unable to move a discussion to chat, and the error message isn't readable (Mathematics.SE)
- "move this discussion to chat?" link is broken (Software Engineering)
- Where do I report technical problems? (Christianity)
Some of them have been tagged status-review, one of them even by a staff member, but this problem isn't likely to be resolved before Monday, it deserves to be more well-known across the network.