@jobal Thanks, that’s great! Can confirm it works on my FP4. Unfortunately now that the wide angle camera is working, the front camera does not - I get an error “failed to open camera”" although it works flawlessly in GCam. This is pretty weird, but at least I have 2 apps now that each do 2/3 of their job so I’m good 
I actually switched back to /e/OS after checking that my most important apps work correctly, currently my only issue so far is PayPal which just crashes on start. Hopefully that’s only temporary.