Windterm 2.6.0 cannot accept keyboard input.

I opened two windows, one of which does not accept keyboard input. I am certain that the windterm program is still alive, and I successfully switched between different pages of this problematic window using the mouse.
Is this a known issue?

Reproduce the report by opening two WindTerm windows and checking whether keyboard input fails in one while mouse page switching still works. Confirm that the affected window remains alive and determine a repeatable failure condition; done means keyboard input works reliably in the two-window scenario.

Written by the indexing model from the issue text.