Black splash window on audacity

[ghost]

Output of awesome --version:

awesome v4.2 (Human after all)
• Compiled against Lua 5.3.4 (running with Lua 5.3)
• D-Bus support: ✔
• execinfo support: ✔
• xcb-randr version: 1.5
• LGI version: 0.9.2

How to reproduce the issue:

As I am using Arch Linux:

1. # pacman -S audacity
2. $ audacity

Actual result:

Splash window is black

Expected result:

Splash window is audacity's logo

[actionless]

#2292