emoji previews do not appear in emoji picker

My emoji picker is currently only showing a selection of finmoji; even of those, 🐻 and 🤝 are missing.

None of the other regular emoji appear in the picker. This happens across browsers and machines.

Once an emoji is picked, even if it doesn't preview in the picker, it will appear in the composition area.

I thought I must certainly be the only person experiencing this, however at least one other person reported having the same problem on IRC.