1. Run into a breakpoint.
2. Switch to instruction-wise operation.
   The button changes to pressed state and Creator shows the disassembler.
   
3. Stop the debugger.
   Creator shows the codeeditor again.
4. Let the debugger run into the breakpoint again.
   Creator shows the disassembler again, but the button is not in pressed state.
   
5. Click the button.
   Creator still shows the disassembler, the button changes to pressed state.
6. Click the button again.
   Creator shows the codeeditor.

When the disassembler is being shown, the button should be in pressed state. Clicking it then should immediately switch to the codeeditor.