Top Panel and Window Resizing

Good evening

I started using Ubuntu-Mate today. I really liked the top panel used. I added some folders that I use frequently.

When I open the folders using the top panel, the window opens on the main monitor and I can't move them. I can't drag them. It does not appear nor the resize keys either.

To use folders on a secondary monitor, I must open the file manager by another method (desktop, menu), not through the top panel shortcut.

Can anyone tell why this?

Note: only happens with folder windows.

Thank you very much in advance.