I believe what you are seeing and these options show, are as a result of the (dashboard or) tab where these portlets reside have had the 'Personalizable' option unchecked for them.
Right now, the only way I'm aware of to have these options return would be to allow the tab to be Personalizable again, although I suspect you took this off for a reason to begin with.
Whilst it may turn out that this is the expected behaviour for Clarity, I cannot be entirely certain and would probably suggest you open a support issue to question if the Restore option should be taken away from the maximized portlet menu if Personalizable is unchecked and the Minimize/Maximize options linked with this feature are also being removed. Make a reference to this community thread URL in the support issue, and query if this is potentially a defect.