New Version bug

I'm trying to prep for the new version that we will have to switch too next month, not sure i'm glad about being force to switch to the new version.

I see we have a bug in our custom module.

We have multiple custom buttons in one of our custom module. about 10 buttons with different automatic process. but with the new version we only see the first six buttons the others are not on screen.

see screenshot of the open dialogue while I press the buttons...