if you found any glitches that related to Shuffle.
In Level 1381, a glitch can cause you to lose the game because there are "no more possible switches" even with three adjacent candies that should have been cleared.
This can happen when the coconut wheel or colour bomb is stuck between unmovable blockers (like icing) or ingredients, and there are no possible moves left. The game thinks that the coconut wheel or colour bombs are counted as possible moves, so the board will not shuffle, forcing the players to press the red button and lose a life. However, players can also make some ineffective switches and the game may shuffle the board for them. (Credit to Supermario3459+ Tonverg11)
Sorry for no evidence, but credit to TrackMaster'sbiggestcollector.
Rarely a hint suggests a move that cannot be done. The impossible hint usually revolves around the Liquorice Locks and/or marmalade.
Example 1: In the picture on the top right, you can see 2 glitches at once: Firstly, there are no possible matches, no colour bombs and no coconut wheels, yet the board does not shuffle. Secondly, the hint given was to move the green candy. However, it is locked; therefore, this match is impossible.
Example 2: This example is level 492. The photo on the right shows a hint for matching the red candies including jelly fish, however it cannot be done. If it occurs, try to randomly swap candies on the board a few times, and eventually the game would recognize no possible switches and may shuffle the board for you. This is prone to happen on levels 336 and 452 on Facebook.
Example 3 - Level 243, chocolate ball is between frozen striped candy and jelly. No possible moves exits but shuffle does not happen.