If you apply a standard shader material and rotate your 2D character, the character will disappear. It appears that unity doesn’t draw the character on both sides when using a custom material. The character is visible if you go into 3D mode and navigate to the opposite side. Basically, Unity only draws the character on one side using a custom material. Therefore, when you rotate, you are viewing the side that’s not rendered.
Is there a way to render the character on both sides using a standard shader material?