I am not sure I understand this bug report at all.
Make sure you are not introducing non breaking white spaces when you copy paste from outside obsidian.
My description of the problem isn’t the best sorry, I wrote it up while late at night. The graph view doesn’t work at all in reading mode. And when I tried to look up the syntax I should be using on the markdown syntax thing, I saw that it was broken there as well. So the bug I’m trying to point out is those two. Mermaide code doesn’t work for me in reading view. And also the documentation(?) has broken code