PDF in Ipad Pro

1, The PDF in IPAD Pro could not be open by other app;

2, The word in PDF could not be checked by the dictionary in IPAD pro

3, The use of apple pencil is very limited. The apple pencil could not click one word in PDF and copy it.

I hope the experience of Readcube in ipad pro could be improved.

Thanks a lot.

Best

Jintao