This came up in another thread but just experienced it for myself. Asked a seller a question 2 hours ago. Got no reply. Didn't really expect one as it is the weekend and not every one is crazy like some of us.
Was shutting down and decided to check my own emails before turning off. In my own emails was a lovely fast response from the seller with the answer I wanted. But when I went back to my Q&A it showed 0 and not only that the question I asked was gone and no answer from the seller. But two older questions still there to other sellers with no responses.
Before anyone says well maybe the seller deleted the question from the listing. No they didn't the question is still there.
Thought I'd just let you know as it was brought up earlier and could be a missed sale or purchase for someone if they don't dig deeper and check their personal emails.
I will put it on the glitch thread though I am sure someone must have done before.