There should not be a background.
Try this in a brand new project:
1. create a title with the word STOP in green. Just those four letters and nothing else.
2. create a title with the word GO in blue. Just those two letters and nothing else.
3. put the first title on track two
4. put the second title right above it on track three.
It should look odd since the STOP shows through the GO. If they don’t then you have something very odd going on.
5. Move the first title so that it shows at the top and the second title so it shows at the bottom. Use the Motion effect’s Position parameter to do this.
You should see them both clearly.
6. Import a still image and put it on track one.
You should see STOP and GO above the picture.
Steven
https://www.stevengotz.com