Cannot bind shortcut to diodon history menu although it works from terminal

Question

Diodion hotkey feature doesn't work for me. So I wanted to bind system hotkey to /usr/bin/diodon to open the history menu.

If I type /usr/bin/diodon in bash shell, it works absolutely fine, the menu opens.

If I bind bash -c "/usr/bin/diodon" or run a script below, the script is executed but no history menu opens.

#!/bin/bash
/usr/bin/diodon
exit 0

How is this even possible? Am I missing something?

Answer 1

I tried the workaround @vanadium has found and adding delay to solve race condition worked for me (Xubuntu 16.04.3):

bash -c "sleep 0.1 && diodon"