Common clefs stacking in right panel

Never saw this before, any idea why this is happening?

Try saving your project and restarting Dorico. My assumption was that this was something to do with a font update, but the last time someone mentioned it it wasn’t - Dorico just needed a restart.

Ah yes, that did the trick. Thanks. It’s a Dorico file someone else mailed me.

I get this frequently. It’s mildly annoying.