Observed behaviour
You can only initiate sprints when w (and no other movement key) is pressed. This makes it impossible to start sprinting when walking diagonally (e.g. w and a are held). You can still keep sprinting once a sprint is initiated.
Expected behaviour
As long as you're walking forward and not hitting a wall, you should be able to start sprinting.
Thank you for your report!
We're tracking this issue in MC-279208, so this ticket is being resolved and linked as a duplicate.
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