I'm sorry you're experiencing this issue!
If you don't mind, can you provide me with your device model and its operating system version?
If you are playing on an Android device, we are currently working on an update that should resolve this issue, but I want to be sure just in case! Essentially, the shaders used on certain assets does not play well with certain GPUs found in Android devices. We're replacing those shaders now and will hopefully have an update out at the beginning of next week!