VRC: VRCSDK3-2019.12.18.15.52
UDON: UDONSDK-2019.12.18.17.03_Public
When creating a Get Program Variable node, only the first name entered works. In the example image, it works when first created with var1, but if you change the variable to var2 it stops working entirely, even when switching back to var1. The only way to fix it right now is to delete and create a new Get Program Variable node.
I included an example image of a modified spinning cube where it only worked when using the first program variable.