small random clefs appearing in parts and score

For some reason I’m seeing small reminder sized clefs appearing in both parts and score seemingly at random. I can click on them and they’ll highlight orange, but I can’t delete them, I can’t make the invisible, I can’t change them. I’ve tried to get rid of them in both Write and Engrave mode. They’re showing up in both the part and the score- they are still viewable in print mode. Anyone encountered this before? You can see them in m125 of both the Marimba and the Kick drum part attached, they also appear elsewhere, seemingly at random. Thanks!

It might be related to this:

hm, anyone from Dorico able to check this out? Is it indeed a bug? Thanks!

Yes, per Anders’s reply, it is a bug, which will be fixed in the next update.