Video showing the bug https://www.youtube.com/watch?v=vNSNCR9V-6U
Steps to reproduce:
Equip an Elytra and move the player's rotation to face straight up, then jump, then jump again in midair to activate flight mode.
Environment
CPU: AMD Athlon™ X4 880k Quad Core Processor @ 4.00 GHz
GPU: AMD Radeon™ R7 360 Series
RAM: 16 GB
OS: Windows 7 Professional 64-bit
JAVA: Version 8 Update 161
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However, this issue has been closed as a Duplicate of MC-122354.
It has been linked to this report. If you have additional information, please add it to the duplicated report.
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