Inter-dimension teleport will reset players' flying mode and effects

In creative mode, you fly (double click space key), and make some effects (/effect).
Then teleport to another dim, for example, /execute in the_nether run tp ~ ~ ~
You will find you're in walking mode instead of flying, and your effects will continue for a while (maybe short maybe long).
It doesn't happen if you use portal block for inter-dimension teleport.