Strange things happening at my house..

[Korxi]

I don't know if there's something funky in the air around here but I've get two orchids acting a bit strange (I think..).
Both of the plants are starting new growths on top of existing pbulbs..

The first is a noid catt. that I bough last year - it wasn't in bloom and hasen't bloomed for me yet but something might be happening now.
Actually this one is starting new roots and a new growth(by the red arrow) from the middle of the the existing growth. And this existing growth is also a bit strange since it is actually two pbulbs (the first matured and then sent out another instead of a sheath I think)

The second is promenea Meadow gold in my terrarium. It had a new growth starting out normally when I got it, unfortunately this died and now it is starting new ones on top of two old pbulbs.

What is going on here!?! Are these cases common or did I just buy weirdo plants?

Christian