this looks like the code i suggested in
https://forums.mirc.com/ubbthreads.php/topics/264614/Re:_Script_Response_Time#Post264614

Do you still have those 3 lines below the line?
raw USERNOTICE:*:{
Those lines were echoing debug info to a custom @Sub window. If that code is still there, is there anything showing up in that window? If not, maybe your $msgtags(room-id).key is no longer 30084163 or there's another :USERNOTICE: event above this event handler that's stealing everything. Or maybe "/remote" says OFF.

Offhand, the only way I can think of that a JSON script would disable this would be if it contained a 'msg' that isn't working right, or if it uses :PARSELINE: to intercept server messages and replaces them with garbled text. You could temporarily uninstall the JSON script to see if the problem goes away, but I kinda doubt it's the problem.

Be sure to scout your status window for any error messages that might be related.