In iOS 11 you can currently not follow any in-page links to anything but inputs.
Steps to reproduce:
1. Activate VoiceOver (on iOS 11)
2. Open http://jsbin.com/wumitiw in Safari
3. Navigate to any of the links (except "link to input")
4. Follow the link (i.e. double tap)
The focus moves to the correct element for a split second and then moves back onto the link that was clicked on.
The focus should go and stay where the link pointed to.
I just re-checked this in iOS 12 and iOS 13.
The issue is still in iOS 12 but seems to have been fixed in iOS 13.