Filr ios app converts pdf to corrupt images

In one of the recent Filr updates there is a change in the viewer of pdf files at ios devices.
Pdf files are now shown as images and the conversion is not always good. Some characters are wrong ore missing.
On Android devices the pdf file is shown as pdf file and views correct.

Is there a solution for ios devices to view pdf files with a pdf viewer.

We have an up2date 3.3 environment.


Sander de Jong