7.x-1.x

1. Install module module
2. Add a model type `ModelType1` and press save
3. The new model type is immediately available in the model_types view
4. Pressing the edit/manage fields/manage displays/clone/delete/export works
5. Path admin/structure/model_types/manage/modeltype1 works
6. admin/structure/model_types/manage/1 works

7.x-1.x-dev

1. Install module module
2. Add a model type `ModelType1` and press save
3. The new model type is NOT immediately available in the model_types view. You have to reload the page again (BUG1)
4. Pressing the edit/manage fields/manage displays/clone/delete/export DO NOT work
5. Path admin/structure/model_types/manage/modeltype1 fails (BUG2)
5. Path admin/structure/model_types/manage/1 works

I think bug1 and bug2 have been introduced in the dev branch.

It has something to do with the change:
-class ModelTypeController extends EntityAPIController {
-class ModelTypeController extends EntityAPIControllerExportable

but I have no idea why