V6 _4View sets all viewports to wireframe

WTF? I only want to reset to 4 views, this has nothing to do with what Display Modes the viewports are in !!!

here not.

Yep, same as Mitch here–6.2.18043.22301, 02/12/2018. Repeating 4View shows a brief image of the viewport display mode prior to initial 4View command.