This has been a problem for months and its very annoying. I have my firefox shortcut pinned to my taskbar. It's a shortcut directly created from the firefox.exe file in my programs folder. EVery so often after I'll restart my computer my firefox icon will go blank and it you click on it it says "Can't open this item. It might have been moved, renamed, or deleted". The thing is I also have a firefox shortcut on my desktop. I use that shortcut to pin firefox to my desktop. That shortcut is always fine and this problem doesn't happen to it. Does anyone know what's going on?

I'm on Windows 10 64 bit.