Last modified: 2011-03-13 18:06:45 UTC
The summary says it all: rollback is automatically set to minor, undo should be the same.
I think there's a difference between rollback (uncontroversial maintenance - vandalism reversion), and undo (a revert, possibly not uncontroversial maintenance).
You can click on "undo" and then change content while this non-automatic procedure. So, this might not be a good idea!?
Inclined to WONTFIX, as long as everybody else agrees. Feel free to reopen otherwise.