Fix Visio 2019 Shapes Not Gluing to Guides or Showing Connection Points

Check if all shapes in your Visio file are affected or only specific ones by testing different shapes from standard Visio stencils.

Place a working shape next to a problematic one to see if the affected shape is grouped, imported, or a custom graphic rather than a native Visio shape.

Select the Connector tool from the Home ribbon and hover your pointer over the edges and center of the problematic shape.

Look for small green connection points to appear during hover. If they do not, the shape lacks predefined connection points and needs them added manually.

In the Home tab, click the drop-down arrow next to the Connector tool and select the Connection Point tool (identified by an 'x' icon).

Click once on the shape where you want to add a connection point to make it the active selection.

Hold down the Ctrl key and click precisely where you want the connection point to be located on the shape.