I don't know where to submit a bug report to, but I found an in-game bug.
It's a visual glitch. I saw someone with a Dungeoneering skill cape on (the new styled achievement cape) and I examined the player to see what gear they had and the skill logo on the cape appeared in a sort of 3D effect over the cape and had a black square behind it so it looked like the cape and skill logo were seperate from each other.
The skill logo was sort of hovering in place. I'm not sure how much useful information you have to go on from that but I thought I'd make a post about it rather than do nothing. If this is in the wrong place, please let me know where I might need to go to report this properly.
Many thank yous
05-Oct-2023 14:10:47