I think, I have located a bug in Cura 3.2.1 as you can see in the Pictures, the model has only two layers. The original size is 0.5 mm height. First layer 0.3mm and the next 0.2mm =0.5 mm. In the layerview, there are 3 layers displayed as you can see.         this is a "little" big problem, when you use Erweiterungen -> PostProcessing -> G-Code ändern -> pause at height. The indicated Layer muliplied with the layerheigth + (firstLayerheight-layerheight) is not correct. Please correct the layers.  Carsten