I have seen the same behavior on and off in my gex. It seems to increase when they are new to an enclosure, like a hesitance to put down their feet. I was also concerned about the calcium, as I've heard this can be a sign of def. My vet says they all have fine calc levels, they are breeding and laying fine as well. So until my vet says othereise, I'm gonna let it go.
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1.0 Blizzard Bill
1.0 Hypo stripe, Het Rainwater from JL (BJ)
1.0 HypoTang from Crested (Apricot)
1.0 Tremper Albino (Cloud)
0.2 Hi-Yellow Leopard gecko (Beatrice, Pepper, Goldie-now w/SD)
0.1 Normal (Freckles)
0.1 SHCT Leopard Gecko (Brite)
0.1 Tangy Mutt Leopard Gecko (Rainbow)
0.1 Tremper Albino (Leucy)
RIP Peaches, Ghost
5 eggs a-cookin'