Minecraft delays certain inputs

When two or more movement inputs are pressed at the same time (strafe + forward, sprint + forward, etc.) the second input is delayed for about a second. This causes some strange movement issues and makes the game much more frustrating to play.

If I press both the forward and backward button at the same time, I go forward for a little bit then stop, despite no change in physical input. If I press forward and strafe right at the same time, I go forward for a second then start moving diagonally. This is demonstrated in the attached video.

I have only experienced this on Linux so far, but this issue doesn't seem to persist with other games.

// THIS ISSUE OCCURS IN VANILLA MINECRAFT, AS WELL AS MODDED CLIENTS. I HAVE TESTED THIS.