This has been a thing for me since 11.06, this also happens on the dev version. My actionbars have a problem lining up the little cooldown swipe thing.
But if I change the actionbar size to a little bit bigger.. it fixes itself.
Alright so, I had 'Hide Voice Chat Buttons' enabled, cuz that little volume button to the right of my chat seems pointless, but when I have that enabled, the default chat buttons like you see in the screenshot above appear.
I'm using the most recently released versions of ElvUI/S&L/AddonSkins. S&L Data Panel 2 appears to be bugging out, I have this data bar on mouseover. Here's what it looks like when I mouseover it: https://i.imgur.com/D3dlfTD.png And when I'm not mousing over it, the coins are still showing: https://...