Construction Robots should turn around when upgrade causes mismatch

[Fevix]

I recently started to upgrade my base to red belts, but all of my blueprints still have yellow belts in them. No problem, I think, I'll just mark them for upgrades. I do so, and the yellow ghosts turn red. Mission complete, or so I think.

A few minutes later (slow bots and I'm at the edge of the range), construction bots arrive.... with yellow belts. They hover over what is now a RED belt ghost for a second, then turn around do spend a few minutes traveling back to the base I have going, just so they can return the yellow belts.

Currently, if you manually build or cancel the blueprint ghost, the bot immediately turns around, so I thought that the same behavior would apply to upgrading the ghost.