Steam's infamous screenshot bug has been fixed in the latest beta release.
The Steam client has been suffering from a small, but very annoying bug for over four years now. The bug would cause Steam to take two screenshots every time you press the screenshot key once.
Anyone who tried to capture beautiful in-game scenes using the hotkey before, knowns the double chirp all too well.
Valve has now confirmed that the current beta client update brought a fix to this issue.
We'll just need to wait until it leaves beta and gets released officially, which shouldn't be too far off.