"Same as Light" doesn't keep an app's colorful icon in Dark Mode

If you haven't set a custom icon for an app, choosing "Same as Light" for the Dark appearance in the icon editor still shows the automatic dark icon in Dark Mode, instead of the app's colorful (light) icon. The selection can also look off when you switch to the Dark tab, with more than one option appearing selected at once.

"Same as Light" should make Dark Mode actually follow the light appearance. We're looking into it.