It may be a weird idea but what do you guys think about moving the publish button to somewhere else in Mx 9?
Some people keep publishing apps by accident on the free cloud… ;)
This is the oldest post I found about it. Really hope they add a confirmation pop-up or move it.
Other posts:
https://forum.mendix.com/link/ideas/2561
https://forum.mendix.com/link/ideas/2807
https://forum.mendix.com/link/ideas/2897
Either this, or show an extra warning when actually publishing to the cloud.