I installed Zettlr 3.6.0-nightly, and the incomplete row/column rendering issue is gone.
I have a note with something like 10 tables, and some text in between.
I am not sure if you are aware, but now, when you click in a table, the page view jumps to the bottom of the page, so you have to scroll back up to where the cursor is.
Furthermore, with any other text editing I want to do the page view also jumps to the bottom.
It is difficult to edit a note like this. A normal text note does not display behavior like this.
Table keyboard shortcuts arrow-up and arrow-down don't work either.