When I first recognized this happening, I was playing Solgaleo GX nd was using the stadium Mt. Coronet. I took the stadium from my "hand" and dragged it extremely quickly onto the field but let go about where my bench is. Then my game froze and all I could do was exit Ptcgo. Today I was using a mill deck that included the stadium brooklet hill. Dragging it almost exactly how I did with Mt. Coronet, Brooklet hill just froze my game. When my game freezes, the stadium I played is just in the middle of my screen, still having the dragging animation (how it glows when you click on it).