Trade Website - Issue on Firefox

When trying to add a mod filter for any item search on Firefox, it completely freezes my browser for multiple seconds. I've tried to figure out what causes this, but have come up blank. I don't use a ton of addons, so hoping anyone else can confirm this is a Firefox problem, or maybe a unique addon problem? I tried disabling a majority of my addons and wasn't able to find a fix.

I have tested this on Firefox myself and everything works fine. You may be able to test if it is an addon issue by going into addon settings and disabling all your addons. Otherwise clearing your website cache or reinstalling firefox might help.

Thanks - I hope it's just Firefox and not a deeper pc issue. Appreciate you giving it a look.