keybase GUI constantly crashing under X11

```
root@8186e871d790 /# run_keybase -g; and keybase oneshot
Shutting down Keybase GUI...
Unmounting /root/.config/keybase/kbfs...
Unmounting and shutting down kbfsfuse...
Shutting down keybase service...
Launching keybase service...
Starting the redirector...
Starting KBFS...
run_keybase: Success!
~ root@8186e871d790 /# /opt/keybase/Keybase

(process:766): Gtk-WARNING **: 21:19:42.084: Locale not supported by C library.
Using the fallback 'C' locale.
Version: 4.1.0-20190612201656+952fee6c59
browser window crashed
Attempting to call a function in a renderer window that has been closed or released.
Function provided here: main.bundle.js:1:946935
Attempting to call a function in a renderer window that has been closed or released.
Function provided here: main.bundle.js:1:946935
Attempting to call a function in a renderer window that has been closed or released.
Function provided here: main.bundle.js:1:946935
Attempting to call a function in a renderer window that has been closed or released.
Function provided here: main.bundle.js:1:947009
Attempting to call a function in a renderer window that has been closed or released.
Function provided here: main.bundle.js:1:947009
Attempting to call a function in a renderer window that has been closed or released.
Function provided here: main.bundle.js:1:947009
```

Reproduce the crash using the reported `run_keybase -g; and keybase oneshot` sequence, then launch `/opt/keybase/Keybase` under X11 and compare the displayed output. Start with the Electron GUI entry point represented by that executable. Done means the GUI no longer crashes or calls functions on a closed renderer window under X11.

Written by the indexing model from the issue text.