nightdews:
Also, the messages/comments that normally incur these 'not found' pop-ups, they do get posted, but the user on other side are unable to get notification on these. Apparently, we tend to miss lots of comments and messages because of this glitch. It was still an ignorable glitch until few days ago, but over these past few days, it has become more frequent. Out of 10 posts we make every day 7-8 incur the 'not found'/ something went wrong' pop-ups.
And we repost them, they get double posted.
Same here (actually came here to submit a request about this issue). No notifications of replies starting three days ago (I did read some replies to my comments after re-visiting the page, but there was never a notification about them).
Also getting the Error - does not exist from time to time when posting a comment, but they usually (not always) do appear on reloading the page.
On laptop, Win10, FF125, x64 if it matters in any way.