SOLID POD: Fail to navigate to the specified widget

There are more than one scenarios where the navigator does not redirect to the specified child widget, e.g. two issues captured by

• https://github.com/anusii/keypod/issues/72
• https://github.com/anusii/solidpod/issues/149

Although a workaround that seemed to work is using Navigator.push instead of Navigator.pushReplacement for the widget in question, but there are a few problems for this workaround:

1. It needs to be done for each case in keypod (a user of solidpod) which really should not worry about an issue like this.
2. It seems unclear why using Navigator.push worked

There is likely a hidden issue in the solidpod that is the root cause, so understanding it and systematically resolve it in solidpod is preferred.