Drop-down menu for shaders in Properties&Material Editor lists irrelevant files from the project

The drop-down menu for shaders in Properies & Material Editor looks confusing, listing all sorts of irrelevant files from the project, see attached picture.

It is a bit hard to find the actual shader files you want to use. Can we e.g. filter this the same way as when importing assets, so it would list only .frag, .vert, .fsh, .vsh, .glslf, .glslv and .glsl ?

Also, when scrolling the list, currently selected item shows weirdly in the box, only ~half of the text visible, see picture.