Blurred forest-link text and popup on hover in firefox

I noticed that when I hover over links under forest-link container, both the highlighted text and the tags popup becomes blurred when using Neuron generated static site in firefox.

It should be reproducible in latest firefox, if not, I can try to add more specific information or try to resolve it myself.

Attached picture shows the problematic menu. Note that when taking a screenshot, the blur disappears.