Here is a series of screenshots that show the bug in level 1247.

Cyndi_Dunlap

The cherries in the right-hand column, when they reach the bottom of the column, fall into the middle section, rather than going to the top of the left-hand column, where they are stuck with no way to move them off the board.

Candy Crush 1247 bug 1-6-17.pdf

KingsPinn

This was an issue that was addressed a while back. If you have the latest update, the level should work fine. 

You can see the original thread here: 

https://care.king.com/en/candy-crush-saga/level-1247