Zen vertical tabs top buttons not symmetrical

[FulgerePulse]

Maybe it's not a big problem, but it would still be good to be more symmetrical. After removing this problem .zen-current-workspace-indicator, I noticed that the new tab button was asymmetrical, I temporarily fixed this problem with the following code

#tabbrowser-arrowscrollbox-periphery { margin-top: 28px !important; }

.zen-current-workspace-indicator button can be fixed by making margin-top like new tab button