Attempts to edit (for example) https://en.wikipedia.org/wiki/Yellow_Submarine_%28song%29 leads to parsoid loading for 25 seconds and then choking and dying with a non-user-friendly error. It's the choking and dying I'm most worried about, however, because I don't know how many articles this covers - it appears to have started last night (something in the new deployment?)
Version: unspecified
Severity: major