Maximize browser window on startup?

Hi, I've been trying to get Librewolf (v. 95.0.2) to maximize on startup (that's what firefox always did) but can't get it to work in a way different than setting privacy.resistFingerprinting to false, and I'd rather not have to disable such a useful option.

On Firefox 95.0.2 with the mentioned option set to true I managed to make the window maximize on startup by using this add-on but it doesn't work on Librewolf.

Is there some workaround that could make Librewolf automatically maximize windows without disabling privacy.resistFingerprinting?

Thanks in advance