ID 273464 - Backdrop nodes are not recognised by the set selected command

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Problem summary
Backdrop nodes are not recognised by the set selected command

Customer reported version
n/a
Customer reported platform
n/a 
Steps to reproduce

1) Create a Backdrop node

2) Input:

geo = mari.current.geo()nodegraph = geo.nodeGraph()nodelist = nodegraph.nodeList()for node in nodelist:node.setSelected(True)
3) You will now have selected every node including the backdrop.
You should see in your nodegraph that every node is highlighted yellow except the backdrop

4) Deselect the nodes by clicking somewhere in an empty space in the nodegraph

5) Run:
 

geo = mari.current.geo()nodegraph = geo.nodeGraph()nodelist = nodegraph.nodeList()for node in nodelist:if node.isSelected():print node.name()​
Note: Even though nothing should be selected anymore you can see the backdrops are still selected internally - (You can confirm this by pressing [DEL] in the Nodegraph).
Even though no backdrop is visually highlighted in the Graph UI, you will delete backdrops.

Workaround
Unknown.

Reproduced by support
Win 7 - 3.2v1, 3.1v3, 3.1v1, 3.0v1

Expected behaviour
Backdrop nodes should be identified and selected

Actual behaviour
None were detected 

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