I believe I have found an undocumented bug with the both Measurement Tool and Widget. I have a map with a polygon layer. Collectively the polygons cover the entire map area and this layer is configured with Framework > Select Data Records and Near Me > Set Location Actions. When using either the Measure Widget or the Measure Tool built into the Map Widget, I am unable to double-click to end the measurement. This applies to both line and polygon measurements. Additionally, clicking the map to add a vertex triggers the Actions in the Map Widget when using the Measure Widget. The Measure Tool does not trigger the Actions.
The Draw Widget appears to behave appropriately, disabling the Actions and ending the drawing on a double-click.