Exception raised when calling destroy "NameError - instance variable @scope_changed not defined:"

I recently upgraded from v0.6.0 to v0.7.3 and begun to notice an issue when calling destroy on an instance that was using acts_as_list. As stated in the title, the exception raised is "NameError - instance variable @scope_changed not defined:" This issue only effect instances from classes that uses acts_as_list. Reverting back to my original version of 0.6.0 solved the issue for the time being.

Other Info:

All classes that use acts as list use a scope to a parent class.
Ruby version 2.3.0
Rails version 4.2.6

brendon / acts_as_list

Exception raised when calling destroy "NameError - instance variable @scope_changed not defined:" #206

TLDR;