Firefox Mobile: Models with Opacity appear ghostly or invisible

When I view my models on my mobile phone using Firefox my models are partially invisible and appear ‘ghostly’. This is using greyscale PNGs in the Opacity or Alpha Mask, using Luminance input. The models work fine in Google Chrome browser.

Could you provide a screenshot of what you’re seeing and some more info on the phone you are using (Make / Model and OS). Thanks :+1: