does anyone else have bubbles like foam on their trans fluid dipstick when they check it?

:Edit:
o yeah it's a '99 deville. northstar 350. runs like a top. all factory/everything works.

I have on occasions. Usually I just ignore it and it seems to go away.

It is sometimes a sign of an over-filled transmission.

But if the level is okay, if the trans is working fine and the fluid is not dirty, not dark and does not smell burned, I wouldn't worry about it.