Multiple layers of alterts in the main window

[rafalcieslak]

Currently, only one alert /question message can be displayed at once. This means that when a new alert appears, the previous one is discarted. Not only it hides information from the user, but can also cause lockdowns, if a piece of code is stuck waiting for a response from the previous alert (which will never arrive).

The solution would be to display alerts layered on top of each other, in reverse chronological order. This way hiding one would reveal the previous alert, and no message would disappear without user confirmation.