Angular "ng" command freezes every tool

  angular-cli, powershell, windows

No matter which tool I select to build my Angular project, after the "ng serve" or "ng build", the tools always freeze.

For example, when I run "ng build –prod" or "ng serve", both Powershell and Putty don’t accept any further input.

In Putty, I can still type, but when I press Enter, nothing happens.
Powershell however doesn’t even allow any further input.

It’s really cumbersome if I have to restart Putty or Powershell to be able to continue typing.

How could I solve this issue?

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Source: Windows Questions