that sounds strange, if you open the select deck window does it say "(selected)" behind your deck ? also is this in Single player or multi-player ? please PM and ill try to fix your issue.
I can't seem to reproduce this bug. What number does the upgrade tooltip say? Also, are you sure you aren't just looking at regular houses with Offline Ticks enabled?
The boost it adds - is to the basic production. So if you already learned better sluicing upgrade (doubles production of sluice box) than washing gold gives you twice as much (which is 1 for every 10).
Real clicks will not display if on powersaver mode, is this the issue here?