When it is (mis-)configured to hide the editor view, the Debug mode no longer comes up when you start debugging.

This makes Qt Creator's Debug mode quite confusing, especially if you un-check every view. This actually happened to someone I know (they thought this is the way to close the debug mode), and then we were wondering "Where did the call stack go?" and poking the UI for an hour or so before we figured out how to bring it back.

Steps to reproduce:

1. Create a "hello world" C++ app
2. Place a breakpoint
3. Start debugging
4. Click Views -> turn off Editor
5. Stop debugging
6. Start debugging again

Expected outcome: when you start debugging, Qt Creator's Debug mode comes up

Actual outcome: it stays in Editor view, making the user wonder "Where is the call stack and everything?"