Wmode in Firefox

I’ve created a userscript called Monster Twitch.

It basically removes every element but video & chat (when activated) and reverts back when deactivated. I’ve just updated to position it next to volume rocker as opposed to the just the bottom left of the page. It works in chrome and appends to the .js-player just fine.

It does not work in Firefox though, I’m suspecting because wmode is not set to opaque. Is there any way to fix this or a workaround where it is not depended on the wmode of the player?

Fixed this issue by setting the script to run when the class Player was loaded. Not a wmode issue at all.