Hello
If you place a sticky piston in a flat world on bedrock and place a slime block on it, the sticky piston can move the slime block up, but it can no longer pull the slime block down. This is especially annoying, because you can't build many redstone things because of it.
Please repair it as soon as possible
Thanks very much
Thank you for your report!
We're tracking this issue in MCPE-96088, so this ticket is being resolved and linked as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
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