Shotcut version 21.10.31
Start a project and put any kind of clip on V1 but on V2 put a transparent clip and add the Text: Rich filter to it. Click off of the V2 clip and on to the V1 clip. Save your project as an mlt file. Now from the V1 clip click on the transparent clip with the Text: Rich filter on V2. This will trigger an * on the upper left of the window where the name of the project is as if something was modified even though all that was done was selecting the clip with the Text: Rich filter.