VRTK NavMeshData Bug?

Hi Im using the latest version of VRTK and for some reason within the VRTK_NavMesh Data script I cannot change the variable 'Distance Limit' to anything other than its default setting 0.1. It the strangest Thing I have seen because if I change it to anything else in the inspector it instantly pops back to 0.1.

It does this in the example scenes and in new scenes that are created. Its a very important feature of the toolkit so if this is a bug its a pretty major one. But the most likely situation is that Im doing something really dumb so if someone else who uses VRTK could check if it does it for them it would be really helpful.

 

Edit: Even typing 0.7 in the script itself it will still be set back to 0.1. Its the the gods of unity just want it to be 0.1 for some reason beyond comprehension.