Internet Explorer 11 hangs when pasting in pdf printer Save as prompt

We've recently updated a number of users to Internet Explorer 11 and immediately started encountering issues with a particular pdf printer (DoPDF) when printing any open websites. At first, we thought that it was an incompatibility issue between IE11 and the particular PDF printer.

After further analysis we noticed that IE hangs when you paste any particular text in the "Save As" prompt that the PDF printer displays. Upon pressing ctrl+v, the windows freezes and the IE session is only released when killing the splwow64.exe process. In the meantime, we've tested with another PDF printer (Foxit) with same result. The same issue also happens when using the builtin XPS writer. The text copied to the clipboard can be either from the same website that is meant to print. from a Word document or an email in Outlook 2013.

Any ideas how to solve this will be appreciated...
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Davis McCarnOwnerCommented:
IE defaults to saving in the temporary internet files folder which can be very problematical.  Have you tried navigating to the folder you want to save it in before CTRL-V?
casscarAuthor Commented:
The location per se does not seem to be the issue - IE is picking up the last access location - which in most cases is either the user's Desktop or their preferred mapped network drive.
Davis McCarnOwnerCommented:
What happens if you manually type in the filename as a test?
Can you paste a sample that doesn't work into a TXT file and post it so I can look at it?
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casscarAuthor Commented:
Typing the filename manually does not create the problem.

I've attached a sample text that, when copied to the "save as" prompt, created the issue.
Davis McCarnOwnerCommented:
OK; copy and paste the text from the example.txt you posted in the filename box and tell me if that causes a freezeup.
casscarAuthor Commented:
That didn't freeze IE. So it has to be something with the text format being copied. Unfortunately, it's not something that we can control since the source of the text can come from various internal & external sites.
Davis McCarnOwnerCommented:
Yup, your text must be Unicode (16 bit international) and something is hating that.  If you save the PDF locally and then copy/paste its name using Adobe Reader, does that freeze?

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