When I was on my laptop I was surprised to see Firefox was no longer open. I'd turned away for a few moments to do something else and I was sure I hadn't closed it but there was no error. When I clicked to open it back up it restored my previous tabs.
I thought it was a bit odd but it's the first and only time it's happened.
However, a few moments ago I was just in the middle of typing something and Firefox just vanished, almost in a sort of flash. No error messages, it wasn't going slow, it didn't freeze or crash like I've seen before...it just vanished. It wouldn't reopen straight away either.
I should also add that the sites I were on are ones that I go on daily so nothing odd in that sense to make it vanish.
Seeing as this has happened on both my computers now and I've never seen it vanish in such a way I'm wondering why it has happened? Has anyone else had this problem?