[dist-upgrade] List of new/removed/upgraded packages does not fit on screen

On my AC100 (screen resolution 1024x600), the list of changes to the packages when doing a dist-upgrade to Q expanded below the bottom edge of the screen. This made it impossible to read the last couple of lines even if scrolling as far down as possible. It wasn't possible to make the window smaller, which didn't make any sense because if I had just been allowed to size down the treeview (the only UI component with flexible size in the window) there would have been plenty of lines still visible.

Also, it didn't seem possible to copy the list to the clipboard, from whence it could have been pasted into e.g. Emacs where I could have inspected it (and even searched it) without any worries about entries appearing outside the screen...