This thread seems to have some people up in arms. Like I said before, if there is a problem, it's better to find and fix than have it become a bigger one. Not everybody is a troll or a troublemaker when they find a problem. Take problems found as a way to improve and make things better.
Got in touch with a friend who has a model 3 and caught him before accepting the .32 upgrade.
Continued testing and changed it up a bit:
Creep is on.
In park, apply brake. Car is on light INCLINE (gravity pulls backward)
Put car into drive.
Push gearstem up half for close to long enough to go into neutral but not quite. Finish pressing fully up and car goes into reverse.
Release brake.
Car moves forward against gravity until brake is reapplied and re-released, then car moves backwards with creep and with gravity.
Reproduced 6 times out of 80 attempts, so there has to be a factor that is hit and miss.
Turn creep off.
Repeat steps above but use accelerator to remove hold.
Again car moves forward instead of backward. Release accelerator and car drifts backward. Reapply accelerator and car moves backward under power.
Reproduced three times out of 33 tries (The friend got sick of doing it after the third time it happened.
Upgraded car to .32.
No longer occurs in fifty more tests. I'd say that some of the "various bugs" fixed in .32 might include this, which honestly makes it a moot point, which is good. I'm happy to call it fixed unless somebody can provide a new set of directions to reproduce it at least somewhat reliably.
IMO:
"Don't use a feature of your car" doesn't feel like an appropriate answer. Either the feature should work consistently as expected, or it should not exist. If it does not work consistently as expected, that should be corrected or the feature removed.
We have a tremendous number of smart people in this forum, and awesome cars that just keep getting better. Better comes from improvements, not ostriching. Like somebody said, "Before you tell me to not worry about it and just enjoy the car...", though part of my enjoyment comes from helping find issues that I know can be fixed so that they do get fixed, and so that people are aware of them until they are.