I would like to create a name tag. For this I have created a 0.2mm thick text in the first layer of a body. After that I colored the text in Bambu Studio and assigned it to another filament. The result in the slicer is strange.
Here are the first 4 layers that the slicer creates:
Layer 1:

Layer 2:

Layer 3:

Layer 4:

The first layer is OK.
In the 2nd layer, the first layer is overprinted black.
The 3rd layer is white again.
What is the slicer doing there?