[fixed]Magus of the Unseen only taps at eot

[Korath]

Describe the bug:
Magus of the Unseen always taps the controlled artifact at the beginning of the end step, and only then (even if you retain control of the artifact due to some other control effect), not when you lose control of it. It also taps just before changing control instead of after.

Which update are you using? (date, name)Which type? (duel, gauntlet, sealed deck)
Dev ae31685 (2017 Oct 16)

What exactly should be the correct behavior/interaction?
Rulings:
10/1/2008: You tap the artifact when you lose control of it for any reason - because Magus of the Unseen's effect ends, or because a spell or ability causes another player to gain control of it.
10/4/2004: The artifact taps after returning to the opponent (if it is not already tapped), so any abilities triggered off it tapping happen at that time.

Are any other cards possibly affected by this bug?
Ray of Command. Ogre Geargrabber appears correct.

[Aswan jaguar]

Fixed Magus of the Unseen and Ray of Command in commit 88d24ec.