Core Dump When Starting Guake 3.8.0

When launching Guake, it will load for 20+ seconds, and nothing will happen. Upon trying to open Guake again, the screen freezes and GNOME core dumps for a few seconds, and then the application opens. This only happens on Guake 3.8.0 and not the previous version.

**Expected behavior**

When opening Guake, it opens without GNOME core dumping.

**Actual behavior**

Guake takes a long time to open and only opens after GNOME core dumps.

**To Reproduce**

Open Guake on GNOME. I was able to reproduce this behavior on three different Arch Linux GNOME machines. On the third machine, something slightly different happens; it kicks me out to the display manager, and I have to login again, and then try to open Guake again. It may or may not work the second or third time.

**Other Details**

I have Guake set to autostart on login, and I have `guake-toggle` set to a keybinding that I use to bring up Guake. Looking at journalctl, there are many lines of "Could not resolve keysm" after GNOME core dumps.

Guake behaves as normal after managing to get into the application. Additionally, on two of the machines with the exact same behavior, I have the AppIndicator extension installed, and when launching Guake, the Guake icon in the system tray is black until it core dumps. Not sure how relevant that is, but it's consistent behavior.

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$ guake --support

Guake Version: 3.8.0

Vte Version: 0.66.0

Vte Runtime Version: 0.66.0

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GTK+ Version: 3.24.30

GDK Backend: