Keybase main window won't open again after closed the first time

[kode54]

On Kubuntu Linux 18.04.1, running Keybase:

Client: 2.8.0-20181008202958+7cf71f6fcb
Service: 2.8.0-20181008202958+7cf71f6fcb

my log id: 221411692590bfdc8de4231c

Upon starting Keybase with the default login autostart under KDE, it starts normally, but if I open the main window with the popup menu, it only opens once. Upon closing it, it won't open again until the application is quit and restarted.

Upon restarting the application, the window may be opened repeatedly without issue, but there is still a minor issue likely unrelated to this: The notification area icon is twice as large as it should be, and appears to be cropped to just the center 50% of the actual icon.