Another user reported this issue recently, but solved it before I had a chance to get to the bottom of it. They disabled CSS Hero to fix it. So there is probably a conflict between MTs code editor and theirs. If you could send me access details for your site via our secure contact form I should be able to trace the source of the error. And hopefully release an update to Microthemer so that both programs can remain active at the same time.
And if you don’t have CSS Hero active, I will investigate other explanations.
Hello Sebastian. Sorry, but I figured out that I misunderstood the interface. I were expecting that to close the windows was necessary to click again on the icon. But it turned out that it’s not an “open/close” windows. You need to select another icon (IE the font one). So, sorry for the false alarm…