Game object icon not visible in scene view

I am trying to assign an icon to my newly created empty game object but after assigning it is not visible in scene view I have tried everything but it’s not working please help…

In the gizmos menu try moving the 3D icons slider until it appears. If that doesn’t work… not sure.

I don’t know why it’s not working I tried that too.

It’s visible only after when I am playing on game view and when I am clicking on the object in hierarchy or on scene view it’s disappearing again

the icon is too small, change the icon size here.
image