When running ooffice2 from the command line, it works, but it complains:
Use of uninitialized value in string eq at /usr/bin/ooffice2 line 60.
That file is a symlink to ooo-wrapper2. The line in question is checking the environment variable OOO_EXTRA_ARG.
Workaround (in bash):
I expect that this could be fixed in the wrapper rather trivially.
Diff to ooo-build HEAD.
You may tweak it to apply on /usr/bin/ooo-wrapper2.
As this is fixed upstream and it does not result in breakage, I'm not fixing it in our ebuild, as we will get it with the next patchset anyway.