Prematurely not-loaded entity.info.inc breaks menu rebuild during bootstrap

Scenario is the following:
- Drupal gets to bootstrap full
- Menu set custom theme is called
- The loaded page doesn't exist -> menu.inc tries to rebuild menu

    if (variable_get('menu_rebuild_needed', FALSE) || !variable_get('menu_masks', array())) {
      menu_rebuild();
    }

- The menu rebuild escalates to entity info load
- At this point entity.info.inc is not loaded (probably because nothing was using the classes defined there
- Because of this - entity_entity_property_info() is not defined
- Entity info is not gonna be complete
- Workflow module happen to rely on some properties and ends with fatal error:

Fatal error: Unsupported operand types in sites/all/modules/contrib/workflow/workflow.entity.inc on line 165

Call Stack:
    0.0009     258448   1. {main}() drush/drush.php:0
    0.0310    2480072   2. drush_main() drush/drush.php:16
    0.3070    8127336   3. Drush\Boot\DrupalBoot->bootstrap_and_dispatch() drush/drush.php:76
    0.3076    8135224   4. drush_bootstrap_to_phase() drush/lib/Drush/Boot/DrupalBoot.php:35
    0.3076    8135296   5. drush_bootstrap_max() drush/lib/Drush/Boot/bootstrap.inc:291
    0.3676    6776704   6. drush_bootstrap() drush/lib/Drush/Boot/bootstrap.inc:345
    0.3677    6778088   7. _drush_bootstrap_drupal_full() drush/lib/Drush/Boot/bootstrap.inc:186
    0.3677    6795240   8. drupal_bootstrap() drush/lib/Drush/Boot/bootstrap.inc:685
    0.4118   10478904   9. _drupal_bootstrap_full() includes/bootstrap.inc:2303
    0.6800   30999184  10. menu_set_custom_theme() includes/common.inc:5208
    0.6800   30999344  11. menu_get_custom_theme() includes/menu.inc:1770
    0.6811   31004896  12. menu_get_item() includes/menu.inc:1755
    0.6811   31005392  13. menu_rebuild() includes/menu.inc:459
    0.6882   31047584  14. menu_router_build() includes/menu.inc:2722
    1.0151   41991456  15. drupal_alter() includes/menu.inc:2762
    1.0287   42726104  16. views_menu_alter() includes/module.inc:1101
    1.0287   42726536  17. views_get_applicable_views() sites/all/modules/contrib/views/views.module:397
    1.0287   42726704  18. views_get_all_views() sites/all/modules/contrib/views/views.module:1388
    1.0287   42726880  19. ctools_export_crud_load_all() sites/all/modules/contrib/views/views.module:1431
    1.0287   42726928  20. ctools_export_load_object() sites/all/modules/contrib/ctools/includes/export.inc:148
    1.0293   42734848  21. _ctools_export_get_defaults() sites/all/modules/contrib/ctools/includes/export.inc:496
    1.0401   43593952  22. node_views_default_views() sites/all/modules/contrib/ctools/includes/export.inc:680
    1.0455   44081632  23. views_db_object->new_display() sites/all/modules/contrib/views/modules/node.views_default.inc:25
    1.0455   44081728  24. views_db_object->add_display() sites/all/modules/contrib/views/includes/view.inc:2419
    1.0455   44081840  25. views_fetch_plugin_data() sites/all/modules/contrib/views/includes/view.inc:2323
    1.0460   44114280  26. _views_fetch_plugin_data() sites/all/modules/contrib/views/views.module:1255
    1.0634   45494496  27. views_discover_plugins() sites/all/modules/contrib/views/includes/cache.inc:134
    1.0663   45573192  28. entity_views_plugins() sites/all/modules/contrib/views/includes/plugins.inc:414
    1.0669   45573456  29. views_fetch_data() sites/all/modules/contrib/entity/views/entity.views.inc:320
    1.0669   45573768  30. _views_fetch_data() sites/all/modules/contrib/views/views.module:1244
    1.0674   45574880  31. _views_fetch_data_build() sites/all/modules/contrib/views/includes/cache.inc:76
    1.0674   45574960  32. module_invoke_all() sites/all/modules/contrib/views/includes/cache.inc:91
    1.0722   45633528  33. call_user_func_array:{includes/module.inc:895}() includes/module.inc:895
    1.0722   45633840  34. entity_views_data() includes/module.inc:895
    1.0804   46268984  35. EntityDefaultViewsController->views_data() sites/all/modules/contrib/entity/views/entity.views.inc:33
    1.0805   46271288  36. EntityDefaultViewsController->schema_fields() sites/all/modules/contrib/entity/views/entity.views.inc:387
    1.0806   46271632  37. entity_get_property_info() sites/all/modules/contrib/entity/views/entity.views.inc:445
    1.0815   46272696  38. drupal_alter() sites/all/modules/contrib/entity/includes/entity.property.inc:39
    1.0820   46274944  39. workflow_entity_property_info_alter() includes/module.inc:1101

It looks like a special case, however end with a white page instead of a page-not-found. (This happens through drush and browser too.)

What do you think is the real issue here? Is it that Workflow is expecting a complete entity definition or we rely on the class autoloader to load the functions from entity.info.inc? What would you recommend the solution could be?

Btw, the final fatal error trigger in workflow is:

$info['Workflow']['properties']['tab_roles'] += array(

And here the properties subarray is not complete due to the missing entity_entity_property_info function.

Thanks for the help in advance!