Trying to sprint sometimes causes the screen to "wob" back and forth

Most annoying when trying to run away from creepers!

I assume by the above that you are describing the "running bug" situation. Running takes exactly two W key presses in short succession (e.g. in a second), and on the second press one must hold it for the duration of the run. Doing just one or more press right after will not make you run any faster; instead, it will cause you to either get stuck in a walk-run loop or in more recent versions will just make you revert to walking.
Perhaps a "run cooldown" may be implemented where after two presses in a second the game treats subsequent presses separated by less than one second as a continuation of the run, or otherwise ignores them for a second. The former is more ideal for escape situations; at the same time it may be less than ideal for situations where correct positioning is a priority.

Duplicate of [MC-1021]

reopened, it was still in 1.8.9, see MC-97552, while the other issue was already fixed, can anybody confirm this for 1.9?

I can confirm this in 1.9 and 1.10 as well. I have a lot of trouble in multiplayer SkyWars because of that annoying bug.

I play Vanilla servers, I don't know if they're modded, they probably use plugins. But the thing is that it's happening in single player.

I have had that problem before! It is caused by sprint rapidly engaging and disengaging and how I usually combat it is to stop sprinting and start again and back to normal 😃

@FVbico (Steven Verberne) I can confirm that this is still happening to me in 1.12, it just happened recently after the update. MC-118615

Resolved as a duplicate of MC-4098 because of better description

Reopened. It's happening again in 1.19 and also in a few different servers, including Hypixel and some of my private servers.