Even though this was originally a bug, it has been one of the most useful "features" of redstone in Minecraft. Seems like someone at Mojang decided to fix it. Torch keys are broken. Some flying machines are broken. Some piston door designs are broken. Removing these mechanics out of the blue causes problems with already established methods in redstone.
Linked issues
duplicates 1
Comments 2
I understand your pain, redstone is useless without BUDs. I suggested a workaround of this at MCPE-40346. Please suggest any more ideas in the comments if you have any.
Thank you for your report!
However, this issue has been closed as a Duplicate of MCPE-14664.
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