The Layer stack on the right side looks too short. The above layer is floating in the next one. Its visible even better, when the above one is selected, see picture URL.
Im using Ubuntu GNOME, so it's GTK3. It could be, that it will be fixed with Krita 3.0 and QT5?

Reproducible: Always

Steps to Reproduce:
1. Open Krita
2. Add new picture
3.Its already visible, especially when Layer 2 is selected.

Actual Results:  
It looks shitty and is annoying when you need Layers often. Also its not easy to hide the above layer, because it floats in the underlying layer.

Expected Results:  
There should be a little margin between two layers.