Apple has just released IOS 13.3 and it has some BUGS.  If you use Smart Invert the feature is not inverting websites.  If you use Zoom and Smart Invert, when you go to zoom in on something Smart Invert turns off.  

I have contacted Apple Support on 12.12.19 and they are aware of teh issue and working on a fix.   My advice right now is don't do the new update until the fixes are done.  If you find any other bugs drop me an email and will have a look at them.  [email protected] 

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