Many thanks, you are a much faster and responsive developer than myself 😂. Your theory makes sense as the blag flag emoji is persistent. I can see it in other clients after posting to Amethyst.

https://haven.accioly.social/260d7ff69f03c06174606e70f98647ba0a2f060eadd22f969ef841122c47e150.mp4

Also, apparently Amethyst doesn't allow me to upload a mp4 file to Haven's Blossom server anymore. Video files aren't appearing in the file selection window.