Clicking stack-trace on pre-debug window

[RobertoMinelli]

There is a weird behavior on the window events when clicking on a stack trace entry from a pre-debug window:

The window gets open multiple times, and resized.

The problem is that, starting from the pre-debug window:

When you click on the first entry, the pre-debug window transform itself in a debug window, as follow:

So, it gets resized, etc.

To reproduce, execute self halt and click on the first stack trace entry.