This isn't a bug. If you need the script list, then do as you've always done: CMD-SHFT-S to open the ScriptMaker window.
I never said it was a bug...
And as far as I can see this is a thread to report issues rather than just bugs
What's the use of introducing a scripts list and place it where the script steps list should be if they aren't consistent about it?
For me, the part of this that is undesirable is that you can open an individual script window (through debugger or even through a layout button definition), and then later open the full scripting workspace to get the list of scripts... but then when you close the Scripting Workspace (it takes so much space), FileMaker also closes the individual script window you've been referencing. I would say the most desirable solution would be that closing the Script Workspace window should NOT close other script windows. Or alternatively, opening the main Workspace window when other script windows are already open should automatically bring those other scripts into the main window.