Collectible Card Game Headquarters

Describe the Bug:
If you Cloudshift a stolen creature that will return onto it's owners battlefield instead of yours-it's controller's one.fixed

Which card did behave improperly?
blink_effect()

Which update are you using? (date, name)Which type? (duel, gauntlet, sealed deck)
Manalink dev fb30d744 version - duel

What exactly should be the correct behavior/interaction?
Cloudshift the creature is returned to controller and permanently if it was stolen by cards like Act of Treason.

I tried to make a new function based on blink_effect() that returns creature to controller and succeed it in that but wasn't marked as stolen so if the creature left the battlefield for any reason it ended up in controller's zones instead of owner's.fixed

Are any other cards possibly affected by this bug?
Yes, all the ones that return the blinked object to controller.
We have: Conjurer's Closet, Ghostly Flicker, Deadeye Navigator, Nephalia Smuggler, Ruin Ghost and Restoration Angel.fixed in commit b91c96be.
Also remove_until_eot: Argent Sphinx,fixed in commit b91c96be.

Maybe still bugged as they can't be tested due to other bugs:
Bogardan Phoenix(doesn't return at all if stolen),
Meandering Towershell which has this bug:
viewtopic.php?f=86&t=16309&p=239073&hilit=meandering+towershell#p168856

Cold Storage (bugged can't be activated to return creature), works fine
Not coded:
Charming Prince, Conqueror's Galleon, Kaya's Ghostform, Synod Sanctum.

Working fine:
Day of the Dragons works fine and returns stolen creatures to controller(doesn't make dragons but that's another bug) fixed in commit dd335d7b,
Necromantic Selection, Oathkeeper, Takeno's Daisho,