Please, add the close button
to the window "batch convert", ... and change the backgrounds (darker) of the sharpen effect (for example) for the dark MP theme.

... close button on windows dialog = ⊗ & ⊝ are missing ... only ⊡ is avalaible (on widowed mode - for classic and dark theme)
and for example ... under Action tab: ... here "Sharpen" and the word "intensity" are very difficult to read ... (a pale gray text color)