Asteroid cluster must be inside your ZOC

Case:

• Mousing over an asteroid belt gives the tool-tip, "Send and Asteroid Miner here to construct a mining base.  Mining bases provide Minerals to the nearest world.
• Send an Asteroid Miner to an asteroid cluster outside of your ZOC amd try to mine asteroids.
• Receive the message, "Unable to build mining base" with the text, "Asteroid cluster must be inside your ZOC in order to be able to build a mining base on it."

Issue/Enhancement:

• I'm not really surprised by the requirement for the ZOC condition and I kind of expected this would happen, but I decided to try to be sure since this is a brand new game and maybe there is a different mechanic.  The only reason I tried was because the help text reads, "Mining Bases provide Minerals to the nearest world."  I thought maybe they worked like colonies and just sent their development back to the closest world, but this is incorrect.
• The tooltip should clarify that the asteroid cluster must be within the players ZOC before they try to send an asteroid miner to mine there.