You should better describe and provide steps to replicate what you're doing. I dropped an image from windows explorer into Firefox and here is what happened. see screenshot What are you expecting Firefox to do???

You should better describe and provide steps to replicate what you're doing. I dropped an image from windows explorer into Firefox and here is what happened. see screenshot What are you expecting Firefox to do???

do you see its out of focus? when you drag something onto an app, the app should take focus. In case of firefox, it doesnt, windows explorer still has focus.