wxMaxima with MacPorts/Mojave

I recently updated my Mac to macOS Mojave (10.14.1).

I was upgrading my MacPorts stuff, and found that wxMaxima was behaving weirdly – some smallish rectangular scroll frame is overlapping the main window and wxMaxima does not work right.

The display looks garbled and corrupted.

I found a way to make it behave better: show, then hide the History (menu item View – History). 

The scrolly thing seems to be a garbled history frame, and show/hiding cleans it up.

Hope that helps someone!