Problems in MII 15.1 SP6 Patch 51

We updated MII from "15.1 SP5 Patch 4" to "15.1 SP6 Patch 51" and I noticed 2 unpleasant changes.

1. In Workbench, in Web tab, if I select the folders/files of the Web folder, and click Copy, then Paste to somewhere else I have four! times a popup with this message "Do you also want to copy the cache of the MDO objects form the copied folder?" Two buttons: Yes or No, but whatever I click this popup comes 3 more times. And Web content has nothing to do with MDO.

2. When logging out from MII I used this code:

With this code the URL didn't change. With the new version the URL is replaced with

http://_some_MII_domain_:50000/XMII/Illuminator?service=Personalization

Is it possible to avoid that? I want keep the previous URL after logout.