The problem tab is disabled when switching the algorithm view in some cases

[abeham]

To reproduce:

1. Launch the optimizer
2. Create a new Genetic Algorithm
3. Create a new TSP problem in the problem tab
4. Run the algorithm and click stop
5. Reset the algorithm
6. Switch the view of the algorithm to a ParameterizedNamedItem View
7. Switch the view of the algorithm back to an EngineAlgorithm View

After step 7 all controls in the problem tab are disabled. Step 4 and 5 are necessary, not running the algorithm does not reproduce the bug.

[abeham]

the bug cannot be reproduced in the latest trunk version