ID 246362 - Former node stays selected when selecting a backdrop

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Problem summary

If a node is selected then a backdrop, both items remain selected. This means that when moving the backdrop, the node will also move since the first selection is not dropped. 

Customer reported version
mari.4.5v2

Customer reported platform
windows10

Steps to reproduce

REPO
1. Open Mari with example head
2. Open the Node Graph
3. Select and existing node from outside of a backdrop or add a new node, then select it
4. Select the title bar of any backdrop
Result: Both items remain selected and move together when only the backdrop should be selected. If the same steps are followed and instead of a backdrop a normal node is selected, the first selection is reset as expected. 
 

Expected behaviour
Selecting a backdrop should not affect the selection of any previous node.

Actual behaviour
Selecting a backdrop after having previously selected a node does not drop the node selection.

Workaround
Unknown. 

Reproduced by support
Reproduced in Mari 4.5v2. 

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