Changing Physical Surface Name and Reassigning It From Default Value Crashes

Changing the name of a physical surface that has already been applied to a physical material will cause a crash, if you try to reapply the renamed physical material from default. The physical material's window needs to be open while you change the name of the surface type.

1. Open attached project
2. Open the Phys_Metal asset in the content browser and leave the window open
3. Open project settings and go to physics section
4. Change the name of Surface Type 1 to anything else
5. Go back to the Phys_Metal asset
6. Change the Surface Type to default and then back to the Surface Type that was originally assigned (notice that it will display the old name)

RESULT
Crash

EXPECTED
The surface type is assigned correctly

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