Highlight Diff giving unexpected results in RCM/ACES

When using "Highlight Difference" (A/B) in RCM projects that are not timeline Rec 709 2.4 the output looks to be processing in the wrong color space.
For example if timeline space is set to LOG-C or ACES the default color of an unchanged pixel is full white. The expected behavior is that this pixel would be middle grey.
Tested on PC. Version 17.1 Build 24.
For example if timeline space is set to LOG-C or ACES the default color of an unchanged pixel is full white. The expected behavior is that this pixel would be middle grey.
Tested on PC. Version 17.1 Build 24.