I would strongly suggest updating at your earliest convenience. There have been some important bug fixes since Audacity 3.0.0.
The current version is 3.0.5: https://www.audacityteam.org/download/
That’s probably a bug. The close command works ok for me.
Can you remind me how to upgrade from a portable installation?
I did install in a different folder and created a folder called “Portable Settings”. That seems to work for a new installation but how do I move all my settings? The Macros I can copy but what about the preferences? I didn’t see that explanation in the manual.