Platform, device and operation system
What were you expecting to happen, and what actually happened
When upgrading a Farmer, Miner, or Merchant, all resources currently accumulated for that hour are wiped and reset back to a 1 hour timer. In the case of a Farmer, lets say she is level 11 getting 40 food per hour. If she was upgraded to 42 per hour at the 30 minute mark, the player would lose 20 food. This would make the upgrade of 2 more food per hour effectively take 11 hours to start to take effect due to 10 hours making up for the resources lost.
What I was expecting to happen is either the timer stays at the time that it was, or the game gives the player the partial hour resources and then sets it back to 1 hour. Currently it does neither of these 2 things and the resources are simply lost.
How often does this happen? When did it begin happening?
Always at 100% consistency since start of early access.
Steps to make it happen again
Upgrade Farmer, Miner, or Merchant at any point where some of their timer has already gone down.