Steps to reproduce:
1. Open user-attached project
2. Select DefaultAvatar in the Hierarchy
3. Add "Animator Controller FAULT" into its Animator Component's Controller field
4. Enter Play Mode and see that two values of value__int are printed
5. Change the Animator Controller to "Animator Controller OK"
6. Enter Play Mode and see that only one value of value__int is printed

Expected behaviour: value__int is printed once like in step 6
Actual behavior: value__int is printed with both initialization and edited values

Reproduced with: 2017.1.1f1, 2017.4.6f1, 2018.1.4f1, 2018.2.0b9, 2018.3.0a1

Note: this seems like an edge case as it was not reproduced from scratch again nor is it clear how the situation came to be this way to begin with