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Summary: If you press sprint (CTRL) before pressing forward (W), the player does not move. This occurs when CTRL is held before W, releasing CTRL causes the player to move after a delay, releasing and pressing CTRL again causes the player to not move at all.
Expected: Player will immediately begin sprinting forward.
Actual: Player does not move. If the sprint key is released, the player will begin walking forward after around half a second. If the sprint key is released, pressed, and released again, the player will not move until the forward key is re-pressed.
This did not occur in previous game versions.
Temporary solution: press W first, or double tap W instead.
Also affects 1.20.80.