As a separate issue, I find the link provided by the (invisible) icon does not work from the same topic. If the icon gives me:
https://forum.example.com/t/testing-anchors/63647#p-311503-heading-1
I have to create my link using only #p-311503-heading-1, not the full url. The full url does work if I paste it in the browser though.
I’m up-to-date with 3.6.0.beta3-latest.