The Source Monitor doesn't display the effects added to a clip. To check that, select the clip and highlight the Effects Control Panel. That panel will show you what effects are applied, and the Program Monitor will show you what they look like.
If you want a matching frame from a clip in the timeline in your source monitor you need to close the clip in the source monitor first.
Then double click.
If you use the shortcut M you get a matching frame from the clip in the project bin in your source monitor.
I like opening the clip in the souce monitor with matching frame for adding clip markers.
Always having the matching frame by double clicking on the clip in the timeline (without having to close the clip in the source monitor first) used to be in Pro2 but Adobe discontinued that feature.
I miss it dearly.
Unfortunately the source monitor does not show the added effects, the program monitor does.
If you want to see the effect just press play.
Yes, Ann, that's what I am missing in pp. In fcp you double click, which opens the Clip in the Source Monitor. Matching frame is different- there you'll Open the real Source-Clip from the Browser (the naked one if you like). Thank you all for the replys!