Scratchpad hotkey is now Shift-F4
When you put a key next to another key, there seems to be a strong chance* that some of the time, you will hit the wrong key. It so happens that the Scratchpad, landed recently on nightlies and now over in Aurora is right next to another key, F5. Which, you may know, is also Refresh.
So people have been opening the Scratchpad by accident and being annoyed by it.
To help mitigate this, we’ve added a Shift key modifier to the shortcut. It is now Shift-F4 on all systems.
For deets, see: bug 664746.
Just landed on Aurora, so if you’re on that channel, you should get an update shortly.