Dissapearing text glitch

Hey guys, i love your software.
But please tend to this new glitch that menaces me: sometimes when i type whole paragraphs dissapear at some point (you can not select them or anything at this moment) it goes away by pressing “Enter a couple of times”. This glitch is so omnipresent that you probably noticed it yourself. In case you did not: i have latest macOS Sierra on a macBook Pro 2015.

dosvidotz about Ulysses – The Ultimate Writing App, v2.6