Android Watering can bug

[jojuxtapose]

I cannot water plants more tile with copper watering can

 

[Terdin]

You need to keep pressing on the tile you want to start on, if you use the tap-to-move and using that to interact with stuff too, to start charging up the watering can. It doesn't water more tiles in one go without charging it. Can be a bit tricky to learn how to make it do what you want to do. If you have set it to use virtual buttons, you need to press the button a bit longer.