XF upgrade 2.1 to 2.2, all FA icons are broken.

[Dragonfruit]

Hello all,
I attempted a test upgrade with all addons disabled first.

Everything looked like it worked, but all FA icons are broken. I attempted template merges on PAGE_CONTAINER and core.less believing it may have been an issue with one of those, but it did not resolve the issue.

Nothing urgent, as this was just done as a trial run. But does anyone have any insight on why all FA icons would be broken?
It's just displaying as a square with letters & numbers in them, like F0E1.

Thank you
XF upgrade 2.1 to 2.2, all FA icons are broken.

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