In the cheatsheet and in the font itself mdi-twitter is broken and displays no icon.
I see it just find in both the cheatsheet and the TTF font.

Can you please provide more information?
Tested in Chrome / FF / Safari. Looks fine. Disable any plugins or try in incognito.
Some ad blocking tools are very sensitive to "brand" related CSS classes.
Yep it was a new version of adblocker. Thanks.
On Mon, Jul 27, 2020 at 12:05 PM Austin Andrews notifications@github.com
wrote:
Closed #5369 https://github.com/Templarian/MaterialDesign/issues/5369.
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Yep it was a new version of adblocker. Thanks.
On Mon, Jul 27, 2020 at 12:05 PM Austin Andrews notifications@github.com
wrote: