My worst experience was with spaces in code from an engineering professor who used a non-monospace typefont. Sadist. Though it was comic sans, they were probably just dyslexic. Despite the class focusing on numerical methods, we had to hand write Matlab code on paper using proper syntax. I have no clue why. Never learned much numerical method, nor were we ever allowed to use Matlab except on a few "projects" during the term. I found out about the spaces when i had to debug his example code he gave as solutions(which we were graded against). I saw errors and had to confirm i wasn't losing my mind. ...I wasn't. Anyways there was a mix of spaces and tabs to align the comic sans.

TLDR: I couldn't care less. Just don't code in word, and use a monospace font.