Uploading files via WhatsApp or Facebook causes Firefox to hang and storage usage to increase
I'm on the latest version of Firefox (77.0.1 64 bit) and an up to date Windows 10 installation on an HP Pavilion 15 laptop.
Trying to upload photos and videos via WhatsApp and Facebook causes Firefox to hang (not responding) when choosing files to upload. I get the "working on it" message but nothing else. Task Manager shows the storage usage increasing and I closed the task when it got to 900+ MB. Tried several times yesterday and today with the same result after ensuring all Windows software was up to date.
Anybody got the same issue? Any clues please?