Problem with "path" dialogue in publishing setup

When I click the ‘path’ button to choose the remote folder on the server in publishing setup, none of the dialogue buttons work.. I can’t click cancel, new folder, choose, or the refresh icon..

The dialogue window seems completely busted.

Here’s a screenshot - but also have a video (which also shows the mouse clicks doing nothing on the buttons).

the only way I can get out of the dialogue is by hitting escape or the enter key.

Rapidweaver Classic 9.6.6