Different color and image behavior between preview | test | run mode

Widgets & Design

I have a strange behavior which I can't explain. I am following the flutter university course on Youtube (E-Commerce app).
Between preview, test and run mode the app is showing a different behavior.

Preview: looks all ok.
Test: Decoding error for images (I used the sample images as shown in the course)
Run: Icons not shown correctly, no nav bar
Run (full screen): looks ok.

As the project is all the same, threre should be a glitch in this flutter flow version?

Preview:

Test:

Run:

Run (full screen)

What have you tried so far?

I tried to switch of dark mode, but no change.

Did you check FlutterFlow's Documentation for this topic?
No
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