Tall sprout?

Whenever I am sprouting a bunch of seeds, they always seem to do this to me. Some will be really short and others seem to stretch like the one in your picture. I've found that it's really no indication of a problem and they usually even out. As long as you've got your light close enough, I wouldn't worry about it.

When you transplant just bury the stem a bit and you'll be fine

i had this happen to all my plants and so far no problem with any of them, i notice that even when i lowered my light they still shot up like that,

same thing happened to mine i had no problem so u shudnt wrry about it

you're correct sir! the light was too far away. as mentioned, you can bury some of the stem when x-planting. it's happened to me too. i usually prop it up with a few tooth-picks in case it decides to fall over.

same thing happend to mine i re planted it and burried the stem a little bit and lowerd my light and their doing just fine