– Selective auto-placement (i.e. only activated for some apps) is in the backlog and will be implemented soon
– Could you please be more specific about the display issue during resizing?
– Mosaico does its best to try to work with all apps, however some of them have a custom handling of their resizing functions, and will not allow external apps (i.e. Mosaico) to resize them. You can improve this by running Mosaico with admin privileges. Thank you anyways for reporting this, I’ll try to improve compatibility with these apps, if possible.
– Some keyboard layouts prevent CTRL+ALT to work properly. In this case a workaround could be changing your modifiers to something else (i.e. SHIFT+ALT) in Settings

Thank you for your feedback!