I’m using iPhone, but out of curiosity, I’ve just tried it on Nexus 7 tablet and… voila! Only the first icon in the second row reveals its label when shaken. However inside a group, all icons show their labels. Weird!
Anyway, congratulations! You’ve just found one of many SmartThings quirks
Report it to support@smartthings.com
This seems to still me an issue. When I shake my phone (really which I could just press a button on the scree) only the first 4 devices display their name. That’s the top row and the first tile of the second row.
It’s annoying having three temp sensors and not knowing which one is which…