See photo attached.
Steps to reproduce
-Make a creative world.
-Fly off the ground.
-Reopen your world.
Confirmed bug! As you can now see there are no fly up/down arrows. Pressing the jump button will only make you fly higher or double tapping will make you fall to the ground.
This has been fixed as of build 11. https://docs.google.com/document/d/11tUgbssVOAwT0xD1_sB_CJV3Ugl4hZSdVDBbFwayxXA/pub