I have found two more interesting things:
a) bug does not happen with all pdfs. e.g. black&white /usr/share/doc/packages/iproute2/rtstat.pdf works. Bug does happen (among others) with http://www.zq1.de/~bernhard/temp/inkscapebug1.pdf created from simple http://www.zq1.de/~bernhard/temp/inkscapebug1.odp
b) bug does not happen with a fresh install of 11.2, but after a zypper in libpoppler5 without any extra repos, so there was some update to libpoppler5 causing this bug.
I have found two more interesting things:
a) bug does not happen with all pdfs. e.g. black&white /usr/share/ doc/packages/ iproute2/ rtstat. pdf works. www.zq1. de/~bernhard/ temp/inkscapebu g1.pdf created from simple www.zq1. de/~bernhard/ temp/inkscapebu g1.odp
Bug does happen (among others) with
http://
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b) bug does not happen with a fresh install of 11.2, but after a zypper in libpoppler5 without any extra repos, so there was some update to libpoppler5 causing this bug.