Layers Reorganize Themselves

[cwmunro]

Every time I uncheck a layer, it automatically moves itself to the bottom of the layers list. This has happened before (several years ago) and I don't know how I fixed it. It is quite frustrating because, the layers keep jumping around and it have to hunt for them. I'm sure there is a simple fix, just don't know what it is. Is it some setting I've screwed up? Ideas?

[jiminy-billy-bob]

Sort the list by name, not by visibility.