When you have a Project Canvas defined as the first module in the Project's Blueprint, it will display as expected when you navigate to the Project grid and click on the Project.
However, when you navigate to the Project Tile and click on the Project, it will never display. It will also never display if you click on the quick link to the Canvas on the Project's tile.
However, when this same Project Canvas is the 2nd module in the Blueprint, it does come up as expected from the Project Tiles page once you click on the Canvas module.
Clarity 16.1.0
This is caused by DE67381
Workaround: Add the Canvas on any other position than 1st
This is fixed in 16.1.1