say, one has to check several scripts.
one selects the first one by clicking on that script.
that script will be displayed in the script-edit-part
one clicks onto a step to get details
-> the highlited script from the script-list-part will be deselected
If one has to check a list of scripts, it's annoying
(and no, I don't want to write feature request for such basic stuff - at least when there is no feedback at all.. it wasn't a problem with the old script-editor)