(Note: tested with 1.8, not with 1.8.9)
When the haste effect is given, it wears off when the world is exit and reentered. Other effects do not disappear. (Tested with the following effects as given with commands, without square brackets):
/effect Skaijie speed 1000000 2
/effect Skaijie regeneration 1000000 25 AND 255
...jump_boost 1000000 1 AND 2
...health_boost 1000000 25 AND 255
...absorption 1000000 255
Haste was given using the following:
/effect Skaijie haste 1000000 255
This bug applied if I changed to Survival mode from Creative and back, not tested with other gamemode settings.