I make a better description:
Starting conditions:
You have 450 supply storages and the training costs of units are 150.
1. Step:
Visiting a Residence and have a look to the upgrade costs. The upgrade costs are 500 supply storages. You only have a look and do nothing else.
2. Step:
You will train some units and you goes to the barraks. The visible costs of training are now 500 supply storages, because the tab shows the wrong numbers. You see that you have only 450 in your pocket, but it is possible to train the units.
This behavior is seldom, but it could be happens as excample too, if you visit a residence with level 4 and chance to a level 1 residence. The residence with level 1 showes the upgrade prices of the level 4 house. I see this not so often, but sometimes the tooltips or tabs don`t refreshes.
In this morning I have a look to the tooltip for the barraks. I can see ???? x ?????. Some seconds later I want to see the tooltip again and I see now 16 x cerberus.... it works.
Browser for this morning problem: Opera 27.0 but it make no difference to firefox.
Player Name: Denali
World: beta
Operating System: win8.1
Browser and Version:firefox 35.0.1 (32 Bit)
Screen Resolution: 1920 x 1080