Not really a bug, more a UI issue, or a cosmetic player-feedback issue.
When a factory's production is maxed out, there is a red flashing 'light' shown over the factory.
This is great for all factories except red - there is no visual difference between red's team colour and the red flashing light. {edit}Very little difference - its easier to see on Android than on the iPad{/edit}
Could this be changed to blink red/black (or other colour).
Sorry if this has been raised before, I did look but couldn't find anything.