Description
Changes to the sprite import settings cause sprites to disappear from the scene. You need to regenerate the sprite or play the scene for it to reappear.

Steps to reproduce
- Open the attached project in Unity 2018.2.0b5.
- You should see some text along with a tongue face.
- Under project navigate to Assets > TextMesh Pro > Sprites
- Select the TEST image and navigate to the inspector.
- Change Mesh Type from tight to Full Rect(Or vice versa)
Notice Issue >> Sprite no longer appears in the scene. Play the scene, notice that images now appears in the scene.

VIDEO ATTACHED

Appears in: 2018.1.0f2, 2018.2.0b5