lnav runs but display is messed up

[jrmain]

I can't install lnav using apt, and I can't build it, due to host restrictions. So I tried just copying the latest Linux binary to my home directory, and it runs! Sadly, the display is messed up, making it less useful than I had hoped.

The attached screenshot shows the problem.

I've looked at lnav's settings and experimented with the ones related to display, but so far no luck. I've tried a few different terminal programs (conemu, mintty) but that didn't help.

Any ideas?