My plant has always grown straight up but now it leans outward (mostly to one side even though I rotate it every day). Is this a normal growth pattern for zz plants? The 2 large shoots in the center are new growth and the leaning started once they began to unfurl leaves. The plant is by a window facing a porch so it does not get much direct sunlight. Another detail I noticed is that the rhizomes are starting to become exposed. Otherwise the leaves look healthy and glossy. Grew up in a family of notorious black thumbs, so any insight is appreciated!