Refactor -> Rename is adding "this." to the front of variable names

As the title says, whenever I do a Refactor -> Rename, R# is putting "this." in  front of the renamed variables. It never used to do this but has only just started happening. Which option(s) do I need to check to to turn this off?

Under "Inspection Severity", both the "Code Style -> Add/remove 'this.' qualifier" and "StyleCop -> SA1101: Prefix local calls with This" are set to "Do not show".


Thanks in advance