Background dismiss doesn't work in Firefox at craftpip.github.io/jquery-confirm

[ghost]

jquery-confirm version:
v3.3.4

I'm submitting a ... (check one with "x")
[X ] bug report
[ ] feature request
[ ] support request

Current behavior:
Background dismiss doesn't work in FF 100

Expected behavior:
Pop up should shake and not close, then you check "Enable backgroundDismiss" and the pop up should be closed if clicked on background overlay

Steps to reproduce:
Use FF 100, follow https://craftpip.github.io/jquery-confirm/#backgrounddismiss, try the example

Other information:
Can Grammarly influence this?