I wrote a CSS snippet for own use. It just change writing mode to verticality and tune element width and height, no changing anything else. (for why need to change the width and height, please see this topic )
As long as I turn on the snippet, some lines will lost in editing mode. Checking console, it’s not a style problem (like text are hidden or out of range) but a content problem. I mean the cm-line element of some lines disappear. It’s very strange.
