Ok, this is really strange. I normally run C3 from a desktop icon. Today, I got the usual request to update, which I did, which it never does.
However, when I did update, it went to editor.construct.net/r1472/ and something strange happened. A new bar appeared above the editor (see the 'after' picture). Initially, I ignored it. That is, until I ran my project, requested full screen and... the bar stayed there. Whut? No, it didn't disappear. It was both on the C3 editor and my running project. Now that's new.
Ok, so I ran C3 from editor.construct.net instead of the desktop. And again, it asked me if I wanted to update, again I selected yes and again, it didn't.
However, in this instance, that bar reverted back to what I'm familiar with (see 'before') which promptly vanished when I requested full screen.
WTF is this new bar and what's it doing on my project?????
Oh wow, and here's an amusing one. If I click on the x on that 'after' when in the editor it promptly closes the C3 editor. And then, restarts it. When it restarts it's in 146, no bar. I get the request to update to 147.2 and when it does, that 'after' bar appears.