The layers do not follow the general GUI guidelines regarding selection. It is possible to select multiple layers after expanding the layers, but actions taken on this selection neglect the selection all together.
So after recording a few takes, selecting multiple layers and right-click to delete them through the context menu, will only remove the layer on which you right-clicked. Even if that layer is not in the selection at all !!!
I consider this a BUG, but have filed several bug reports regarding this miss-implementation. But support is seeing it as a feature request. Hence my request to fix this behavior and make layer selection work as expected.