Related: bug 47484 - so with 3.6, we'll introduce a new ODF1.2 compat-mode, that switches off several new features known to cause trouble with downlevel consumers.
Fixing for 3.6.
Thorsten Behrens committed a patch related to this issue.
It has been pushed to "master":
Fix fdo#50703 clamp ODF1.2 compatibility-mode to use old encryption.
We need exact and correct target information for automated lists in Wiki and LibO Web Site.