This has happened 3 or 4 times now. I collect a mineral shipment then sell all, adding to my credits balance. I go do a few missions, visit the legion base (or whatever), but when I click back to the minerals, I still have them all in my cargo. The first time it happened, I thought maybe I just "misremembered", but I have now verified that at least twice, I have sold minerals only to have them come back when I click off the page then go back. It's double income for me, which is nice, but it's also an obvious bug.

well it's not doing it for me... so... you must be doing something wrong...

is anyone else seeing re-appearing minerals??

if not, you'll have to contact Dan directly via the Contact this App link below the game so he can take a look at your account and find out what you're doing wrong...

I know when there is severe lag on the system, I have to click things twice to get them to register. Although I've never gotten double credits when this happens. Definitely contact Dan via in-game support. And don't do it anymore unless he asks you to. It could be construed as "taking advantage of a system glitch."

Don't know what I could be doing wrong. Most of the time, it works normally. Like I said, this has only happened a few times

keep an eye on your production timer when you cash in your production...
maybe you forgot to glance at it and didn't notice how close you were to the next hour

(or heck, time flies in this game... maybe you spent an hour doing stuff and didn't realize it)