Pretty sure this is happening for everyone. Not sure if it’s intended or some inadvertant little bug, but maybe @Cyrup will chime in about it and let us know.
It seems like it could be an edge-case problem, but to be sure, can you please try linking your account and reinstalling? It looks like the asset is wrong so a reinstall might force the game to know de correct way!
Not an edge case, I suspect. But it’s purely cosmetic and has no bearing on anything important, so it wasn’t worth my (or, it seems, anyone else’s) time to report. It’s been happening for weeks on iOS for me.