Yes,As I Said,If Uncomment This MessageBox(This is a trick that I have Tested) ,Then the TFindDialog Will works well with AlphaControls 10.26,
But,If Dont't Use MessageBox ,Let it stay as commnet ,then TFindDialog will Disappear soon,this maybe a bug?; Of course, if Set SkinManager.Option.NoMouseHover:=False; Both Comment or unComment MessageBox,TFindDialog Will works well too.
BTW:Test under Delphi XE8,But should be reproduced in Delphi 10