Before, after destroying the web they'd sometimes get stuck on the lower cave level.
Maybe they broke their legs?
And the little ones wouldn't teleport at all.
Oh come on! They are babies!
It take human aproximately whole year to master their motoric abilities to even learn to walk ... and you want theese poor newborn spiders to teleport RIGHT AFTER they hatch? Shame on you! :P
On topic ...
It didnt seem any different to me. O_o