Operating system and graphics card
intel hd graphics 4000 512mb
Short description of error
baking to active image node doesn't respect the vector socket...
Exact steps for others to reproduce the error
add two uv sets to the default cube unwrap or project uvs differently on each
change render engine to cycles.
in uv /image editor create a new image.
in node editor create an image node and pick the new image
add a uv node set to first uv channel
connect output to input of image node
in mesh properties make sure the second channel is set to active
in node editor ensure the new image node is selected
use cycles bake in the render properties tab to bake to image
despite the first UV channel being connected to the node input socket the render uvs of the second uv channel (which have the render icon in the mesh properties) are used for the bake.
this may be "correct" but is the opposite of expected behaviour for teh node editor so I'm filing this bug report..