If I click the split screen button, the bottom view is extremely compressed, as if all the lines overwrote each other. I suspect that they’re dropping one pixel per paragraph. Looks almost like Chinese, only denser.
If I click on this super-compressed text, one paragraph shows correctly; I have to keep clicking to get the rest to show properly. Not so bad with a 10-page doc, but anything longer would be … difficult.
If I have cleaned up the lower screen, closed it, and then split it again, same thing.
Doesn’t matter whether it’s my laptop screen or my 23" monitor.