I was confronted with the "Transaction Broadcast Error" when posting a comment on this thread... It made me post multiple times thinking the post had failed to publish... I was just in time to remove nearly all duplicates. Two had passed the 6 hour limit (after that, the delete button disappears). The one above, I left as is, this one, I edited into this new comment...


This "Transaction Broadcast Error", I do not know how common it is with other users, but if it is common, it should be set as a priority: I ran quite into some trouble with it, just when I started. At that time,  I did remember asking myself should I continue. 

I am glad I did!