[SalesForce] How to open VF page in lightning Experience using URL link

This looks to be a namespace issue similar to the one described here - currently in review.

It can be reproduced using these steps as mentioned on the link

• Create an namespace on your Developer Org and a Managed Package
• Add the two Visualforce Pages to the package and upload it copying the link
• Log into another organization and install the package.
• Override the Account View with TestPage1 and then switch to Lightning Experience.
• Navigate to any Account page and click on either the A href link or OutputLink, clicking OutputLink will work as expected maintaining the correct namespace, clicking on A href link will navigate to your default org namespace which results in either URL "No Longer Exists" or "Page namespace__TestPage1 does not exist". (Behavior varies on how the page will display)

The suggested workaround is not ideal, but it works

1) Right click on the link and select "Open Link in New Tab";
2) Disable Lightning Experience;
3) Change the tag references to make use of the Visualforce tag

So figured this out, and it's a bit clunky if you ask me.

1. Create a VF page that uses the sObject as the StandardController
2. Create an Action on the sObject that opens the page you just created
3. In the controller, create a method that returns a PageReference to the VF page you actually want to go to, and pass add any parameters there.
4. On the VF page, set the method you created as the Action property in the element, like Action={!goToPage}

The downside, you get this big empty modal that pops up for a second before actually redirecting you. The modal has action buttons at the bottom as well... which you can't get rid of.