iOS 12.1.1 - PDF in StageWebView looks pixelated

Hello there,

just loading a pdf in StageWebView (only text, no bitmaps) scrolling down a couple of pages makes it look horribly pixelated.

See screenshots here

https://pasteboard.co/HWpSWLB.png

https://pasteboard.co/HWpQZsX.png

https://pasteboard.co/HWpRbDa.png

This happens on an iPad pro 12 with iOS 12.1.1.

Just with this simple code:

var pdf_file:String = "test.pdf";
var pdfView = new StageWebView();
pdfView.stage = stage;
pdfView.viewPort = new Rectangle(100,0,(stage.stageWidth-100)/3,stage.stageHeight);
var filePath:String = new File(new File("app:/" + pdf_file).nativePath).url;
pdfView.loadURL( filePath );

Tried several workarounds, none worked.

I have also filed a bug: Tracker

Anybody from Adobe here?

Cheers

Pippo