Little Glitch with Layer sorting / Filtering

Hello I’m not sure if its a Feature or a Bug.
When Opening DWG and try to sort the Layer by Name (pressing the LayerName Column) the Layers dissapear at all. I need to click on Filter (any other than all) and back to “Filter all” to have them visible in Layer-Panel.

Happens with DXF as well.
I can’t imagine this is a useful feature :wink: