Extending IndexController in modules will extend IndexController in default module

[akDeveloper]

Extending IndexController in modules will extend IndexController from default module and not from the current module.

Example is when PagesController from Admin module will extends IndexController.
Expecting to extend Admin module IndexController but extends IndexController from default module.

Unable to find template .../modules/Admin/views/layouts/frontend.phtml

IndexController from default module has frontend.phtml layout.
IndexController from Admin module has admin.phtml layout.

By trying to load frontend.phtml layout means that extends IndexController from default module and not from Admin module.