Selecting mark "d" in Peekaboo markbar makes vim wait for more input before jumping to the mark
If I type 'd to select mark d, vim keeps waiting for extra input before jumping to the mark. You can see the d on the bottom right. It only jumps to the mark when you wait for a second without typing anything, as if you're in normal mode on an editable buffer.
Also, N doesn't do anything in the markbar
I was noticing this issue today, and it happens for all keys that expect a motion d, y, c etc...
Looking at the doc you can set this option:
let g:markbar_explicitly_remap_mark_mappings = v:true
It wont fix it completely but allows you to jump straight to the mark you want, the peekaboo markbar only shows up after a small timeout.
After the markbar shows up you will have the same issue, but until there's a better way to fix it this is enough for me. Cheers