inverted letters and images

[invinciblejit27]

No description provided.

[shravanvs]

I had this issue here is how I solved it:
Check if when you select the pdf there are 2 pdf.worker calls made if so ,make sure you have not included the inside a ng-if or any such directive that will trigger the directive again, use an ng-show instead of an ng-if.
Cheers