Greasy Fork

Simply enabling the script with no options enabled causes the Description and Comments to not load on first page load, subsequent loads are ok.

Not enough information provided for troubleshooting. Browser? Extension? Versions?

For me its not only the description and comments, I get a blank page with player and nothing else.
Аt first the problem appeared intermittently, then it was on every 4-5 videos, now its pretty much on every video and even if the page loads normally if you watch in full screen for a couple of minutes, when you exit the full screen its broken again.
Using Cent (chromium based), tried clearing the cookies, disabling other scripts ... same.
Rolling back to 2.25.6 solved the issue.

Version 2.26.3:

Removed probable cause of the issue.