If you attempt to jump while touching a wall and moving towards it, nothing happens. If you jump before you touch it and touch it midair, the character hovers at about 1/16 above the ground until you let go of the direction the wall is or move away from the wall.
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However, this issue has been closed as a Duplicate of MC-142913.
It has been linked to this report. If you have additional information, please add it to the duplicated report.
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