Rickochet - The first time I replied to a post, I had pages of emojis but subsequently I only have the box with just a few of them available too. The tool bar with the text editing options is working.
Update: I clicked the 'insert emoji' button and now there are zero emojis to pick from displayed. But a "colon" appears where the emoji would be inserted. Gremlins.
This doesn't affect me long term as I have an emoji extension installed on this Firefox browser accessible upon demand at the top of the window.