Focus loss on external monitor turns the Termius window black
When using ChromeOS with an external monitor, and with a Termius window on that external monitor, the screen goes black when you lose focus on the window. Reproduce by opening Termius on an external monitor and click off that window to the Chrome browser or something else. When focusing back on the Termius window, the contents are restored.
This does not happen on the built-in screen, loss of focus on the window continues to show the contents.