Hi @crlarchitect ,

At first - about the case when you use LAYOUT command.

You are missing one step - you need to confirm which layout you want to rename:

Command: LAYOUT
Enter layout option [Copy/Delete/New/Template/Rename/SAveas/Set/?] <set>: r
Enter layout to rename <Layout1>: <---Hit Return here to confirm that you want to rename layout with "Layout1" name
Enter new layout name: A-101
Layout "Layout1" renamed to "A-101".
Command:

About the first issue.

When I right-click on Layout tab and select "Rename":

AutoCAD opens text field, where I put new name:

Now I hit Return and get Layout renamed:

Do you use the same steps?

You can also double-click on Layout tab name to start renaming it.