We are sorry to hear about your unpleasant experience using AppBuilder and we are willing to help you resolve the cause.
As your issue is not something we have seen we might need additional information in order to investigate it:
- What is the device specification you are testing on?
- Do you deploy it on the device or use AppBuilder Companion app?
- Can you reproduce the behavior in a sample app? If not would you open a private ticket and provide there your project (if created with VS extension) or just let us know its name if created with in-browser or Windows client.
- Do you use any server requests that might slow down the responsiveness?
- Have you tried your app on iOS device?
- Any additional information like the button we should use to reproduce it or any other is welcome.
I look forward to hearing from you.