I connected the debugger to test version of an app and I have added a breakpoint to a on change microflow. But if it is enabled, I can not use the page that triggers the on change. Also moving the breakpoint to a submicroflow gives the same result.
Problem was a failing connection with the mendix cloud, disconnecting en reconnecting, solved the problem.
I can't use the buttons on te page
What do you mean with 'can not use'. Does the page not appear or on the page you can no longer change values or can you no longer save changed values.