[texworks] cooltooltips breaks new pdf viewer

[Arno Trautmann]

Hi all,

I have a document that makes heavy use of the cooltooltips package and 
used to work fine before I made the latest update of texworks. I have 
now running

Version 0.6.1 (AUR) [r.3614278, 5/1/16 10:43 AM]

on an Arch Linux X86_64. The following document breaks the viewer:

\documentclass{minimal}
\usepackage{cooltooltips}
\begin{document}
\cooltooltip{}{}{}{}{}
\end{document}

Compilation is successful with both pdfLaTeX and LuaLaTeX from TL2015 
and 2016, but as soon as TeXworks tries to show the page containing the 
tooltip, it just freezes. No error messages. Other viewer show the 
document correctly, as did TeXworks in earlier versions. Unfortunately I 
have no clue what exactly cooltooltips does which could cause the freezing.
Is this known or is there a special class of pdf features that is known 
to break the viewer?

I would really like to update a document that relies on the 
cooltooltips, therefore it would be great if the problem could be fixed!


Best,
Arno