I have two pannels: one at the top of the screen and another at the bottom. In previous versions of plasma I used to set the bottom pannel to auto hide. In current KF5 plasmashell, setting any pannel to autohide works as expected initially but the setting does not survive a restart. All pannels start as "Allways Visible". Reproducible: Always Steps to Reproduce: 1. Create a pannel and set it to "Auto Hide". 2. Open a terminal and type "kquitapp5 plasmashell && plasmashell&". 3. Notice that the new pannel created is now "Allways Visible".
*** This bug has been marked as a duplicate of bug 342623 ***