There is a bug when attempting to change
"Input Color Space" on multiple clips selection.
Note that "Input Color Space" was set to "Bypass" on one of the clips in selection (as shown below):

Other clips can have various "Input Color Space" options (other than "bypass").
So now, when a "bypassed" clip is present in a selection and you attempt to change "input color space" - only the clips to the left of "bypassed" clip will accept the change. Clips to the right of the "bypassed" clip will stay unchanged.
The correct behavior should be that all clips within the selection are changed regardless of presence of clips with "bypass" option present in a selection.
This is on Windows 10, Beta 6 (I think even v16 had this bug).