Need dual(dark) mode seperate settings for custom toolbar backgrounds.
Why is this flagged as a bug report? I don’t see anything behaving as it shouldn’t.
Your color, icon and background settings are up to you, and the defaults work in both modes.
(Edit: A feature request to have per-mode, per-toolbar background images is already on our list. Not against it, if we can work out a way to make the UI for it clear and understandable, but the need for it is also easy to avoid.)