Adding Text Runs or changing text deletes Text Styles

Let's say you've got a body of text and have made a couple of text styles in advance but haven't divided the text into text runs yet. Then, after making text runs, all text styles except the first one dissapear.

The same thing happens when you change the content of a text layer.

I am using desktop app latest version (v0.8.2169) but this has been happening for a while now.