They are checking for android, but I checked by Ipad game- Most current version is the regular bakery game version 1.6.8(for IOS)
and mine does not reset for the oven. Previous IOS versions did have this issue.
Can you post the following:
Version of the game you are playing- small number at the bottom on the screen under help -menu
Which appliances this is happening on.
Are you switching appliances or using the same appliance?