There's a lot of Animation on this Discourse Setup

I’m running into a lot of animation on this site. For example:

As I scroll down on an existing thread, a black bar appears below the header/top bar. This probably follows the standard “position:sticky” setup. It hurts.

As I try to post a new thread, I get a pop-up modal instead of a new page. I get very little space to type, so I have to scroll a lot. If I scroll from the wrong spot, the background scrolls and the foreground does not. It gives me a worse migraine, disorientation, and nausea.

I am using Scroll+ because of coordination problems.

If the user preferences, under Interface, include options such as Dark Mode, that might mitigate these effects.