When the Shift (crouch) key is pressed, the player crouches approximately 0.5 seconds afterward.
Environment
FPS: 60
Integreted Server @ 172 ms ticks
CPU: 8x Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz
Display: 958x1003 (NVIDA Corporation)
GeForce GTX 1050/PCIe/SSE2
4.6.0 NVIDA 399.24
Duplicate of MC-147305.