This works perfectly on Orion but does not work on reading mode. can you please fix it? I am dyslexic and this helps so much. I am sure there will be others Orion users with a disability. It makes reading so much easier.
I am wondering if you are using dyslectic font provided by Orion in Reader mode? (Would like to get feedback on that)
In order to get that highlight line feature enabled, Orion would need to re-implement it itself or rescan the portion of the page that is highlighted, or otherwise create it's own accessibility measures for orion users with a disability.