Routing issue after the build process

I have the problem with going to the specific page of the application after the build was created and app was moved to the web server.

Example: App was moved to the server www.testserver.com to the folder angular. I've changed the base href attribute in the index.html file after the build:

We are trying to access it using http://www.testserver.com/angular/customers for example but getting 404 and route is not being hit at all even though all js files were loaded.

Is that a known issue ?

BTW If I try access the page using the pound sign reference, the app at least tries to load the correct route.

http://www.testserver.com/angular/#/customers

Thanks

Mikhail