Hi @CarlosFigueira,
I'm also experiencing PowerApps studio failure behaviors with the new versions (All versions higher than 3.21123.25), where the PowerApps studio will just become all grayed out blank screen and nothing to do at all but restarting the session.
Another behavior is that the studio will get stuck on the play mode and fail to go back to edit mode when clicking on the x icon, F5 or Esc.
Also the visible behavior of a form's Data cards, that are depending on variables, fails by not responding to the variable's true or false value.
Same goes for HTML Labels that are displaying values for variables of a record.
Thanks
Peter,