The bug
Speed effect stops working after switching dimensions but resumes after sprinting.
How to reproduce
Drink a speed potion or give yourself speed using
/effect
.Go through nether portal or end portal.
→ Speed effect stopped working.Start sprinting.
→ Speed effect works normally again.
Related issues
is duplicated by
Comments

Confirmed for 14w21b
/effect @p 1 1000000 100

Is this still a concern in the current Minecraft version 1.8.1 Prerelease 3 / Launcher version 1.5.3 or later? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases.
No response for over a year.
Looks fixed in 19w35a alongside MC-88179
Confirmed.