The Styles Editor dialog box looks wrong on my 4K display (3840x2160 at 200% scale in Windows Settings):
Specifically, the toolbar at the top edge of the dialog box, just beneath the menu bar, does not fit properly into the pane. Only the top half of the drop-down widgets, B/I/U buttons, etc, appears on-screen and only some of the widgets appear from left to right.
The buttons look 2x the size they should be to fit vertically, and there isn't enough horizontal space to show all buttons at once.
A scroll widget appears at the right side of the pane. When I click this, it scrolls the alignment, spacing, drop-cap, etc. controls into view. These controls have the same visual issue of being too big for the toolbar pane.
This dialog box clearly needs to be fixed and tested so that its metrics adjust appropriately to changes of desktop resolution and magnification.
I'm an old-school WordPerfect user who remembers the DOS days fondly. I hope the attached screenshots help address the issue.