Safari issue with editor from nonce

Using the twentytwenty wordpress theme with WP 5.4.1, standard wordpress content in the visual editor is misaligned and overlaps itself. I am using the out of the box theme and Simple Featured Video is the only plugin installed. Diving into the code, I was able to resolve the issue by commenting out line 67 of the main php file. This seems to instantiate a new nonce that I don’t see used anywhere else in the plugin. I just wanted to check to make sure I am not actually breaking any potential functionality for my site.