Weird thing happening with a very basic anchor link on jim-flannery.com/music

Clicking "Watch" doesn't bring you down to the appropriate position on a mobile device. Yet, if you then scroll back up and click it a second time, it is correct.

No idea why this is inconsistent, seems like the only anchor link on the site doing this and there's quite a few.

Not sure what happened here. These embeds have been here for at least a year and suddenly not working on mobile: jim-flannery.com/music