Weird font behaviour in Firefox/Chrome

Towards the bottom of this page there is a grid of images and below it a line of text with links to social accounts (added via font awesome html). When I view it the links are showing as a different font. It seems ok in Safari but not Firefox/Chrome.

The site is in Foundry. Pics attached as well. Is this a font-not-awesome thing?

Proper font here in RW Preview

Offending font here in Firefox

I expect that the paragraph text font is not being restored after the FA font is selected for the FA symbols.

I would ditch those FA symbols and just use the text. Being old FA4 symbols they are an ugly mix IMHO of weights and are not aligned to the baseline of the textand also the “in linkedin” looks a bit odd. You also have them in the footer so you already have all bases covered.