I found a couple similar issues with Sametime & Designer in Notes 8.5.x, and opened PMRs with IBM. I was told at the time, that 'it's working as designed' and there was no plan to fix in the 8.5 codestream.
If you search the 8.5 forum, others are (were ) having similar issues..
www-10.lotus.com/ldd/nd85forum.nsf/5f27803bba85d8e285256bf10054620d/0f281470f89c06c785257ac6005cb78c?OpenDocument