How to return the open Quickly return to the dark theme on Xcode 9.3?

Question

I just upgraded Xcode to 9.3, and I noticed that the "Open Quickly" interface ( cmd shift O ) returned to the white theme (instead of black ones in previous versions that obeyed my Mac, the color theme is dark):

My Mac theme is a dark theme, and for example Spotlight Search obeys it:

Xcode Open Quickly was also dark, like Spotlight Search, until I updated. Why did he turn to the easy topic and how do I get her to submit again to the system topic?