In two of my live help interactions on 10/9/25, duplicate messages have appeared. This happened to me in https://schoolhouse.world/dashboard/live-help?p=102276 and in https://schoolhouse.world/dashboard/live-help?p=102279. I left the duplicates in 102276 and deleted them in 102279. Of note is the duplicates also appear in the subworld version of the page, e.g. https://schoolhouse.world/w/algebra/p/102276, so it's not Live Help specific like some other current bugs are.
Sending a message, followed by sending just an image, appears to be a reliable way to see a duplicate post, but I don't know if that's a coincidence or not. Unless I've never used this communication pattern before today, this bug was introduced in the last 12-18 hours, as I had multiple live help interactions yesterday without this issue.
Attaching a snippet of 102276 showing a duplicate message (just in case the learner deletes the live help request).