Angry Birds 2/Glitches

Self-Destroying Buildings
Some levels with the anti-gravity pads could topple over by themselves, basically completing the level without using any bird cards. However, this would only give you around 25,000 points, which could be fewer points than just using a bird on the level. These levels are most common in the Mighty Eagle's Bootcamp.

Boss Pig Glitch
How-to: Pausing a level while a boss pig is knocked down will shrink smaller, looking like he has no pupils in his eyes.

Miniplayer Glitch
Similar to the "Boss Pig Glitch", the mini player that appears when you pull back the bird on the slingshot has some small glitches associated with it. Mainly the one where the foreground layers don't appear in the top left circle. There also have been sightings of invisible pigs in older versions.

Audio Glitch
This occurs when exiting the daily challenge when completing the first level, then going back to complete the 2nd level. The sound effects and music are silent except the explosions, the card sounds and the damage counter. This also sometimes occurs in the Arena.

Screen Rotate Glitch
Sometimes when opening and closing out of AB2, this glitch could occur that unlocks the game from its horizontal viewing.

Hali-copter Glitch
This glitch occurs with the new version of Hal and when you activate the ability when the purple pig grabs Hal with the grabber gun and at the same time, 2 fans pushing the bird upwards and downwards, which causes this weird glitch to occur.

Bubbles Portal Glitch
When bubbles goes through a portal when inflated, there’s a small chance (2/4) that he would revert to his normal size. Usually happens when he is going very slow through the air, which could be a factor

Clan Status Glitch
This happens whenever a user leaves, when you click on their profile in the log, it still says that they’re in the clan they left.

Apple Glitch
This glitch occurs when the stage clips the apple icon, which collects when a bird, pig or material hits the icon. This usually happens in the carnival stages when there are a lot of bounce back umbrellas and beach balls.

Bird Inside/Behind Pig Glitch
This glitch occurs when both the bird and the boss pig are going through a portal at the same exact time or through one of the fling flowers, which would put one inside the other. Another glitch that could happen is a bird rolling behind a Minion Pig if the centering is off, but there are not recorded instances of this glitch happening.

Character Animation Glitch
Sometimes when a character (bird or pig) is cycling through it's facial animations, 2 layers can end up on top of each other for around less than a second, but it can usually be noticed.