Hello, this bug should have been fixed. Are you running the latest version?
Viewing post in Bug report
If you bought the game here on itch.io, you don't have to buy it again.
Follow the steps in this link to download an update:
https://itch.io/t/1128078/how-to-download-the-updates
And since you're on Android, make sure to use the cloud save to avoid losing your save.