Diễn đàn hỗ trợ Firefox

In updated version I lost my Mouse right click screenshot and edit ability of any images, how do I get it back? I rather use the old version of Firefox and wish Firefox does not force us to update

How can mouse hover be disabled? On some websites (e.g. gva.be) when you hover (unintentionally) over some link, then this link is opened as if you had clicked on it.

How can this be disabled? I searched in about:config for mouse hover but I couldn't find anything relevant. Or do I need an extension to disable this behaviour?