Mulitblock Context menu doesn't respect all selected blocks

This issue was created automatically from an original Mantis Issue. Further discussion may take place here.

Open many.e
In 3D view, click "b" to enter block-selection mode and select a bunch of blocks by clicking-and-dragging. -- They get selected fine, even the Multiblock Inspector shows the block highlighted correctly.
Right-Click on the selected blocks in the 3D view -- Context menu shows up
Set Block Color -- it only changes the color for 1 block.

That's incorrect. It should affect all selected blocks.

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Mulitblock Context menu doesn't respect *all* selected blocks