What is your operating system?
macOS Mojave (10.14.6)
What is your Shotcut version (see Help > About Shotcut)? Is it 32-bit?
Installed from brew (brew.sh)
Can you repeat the problem? If so, what are the steps?
Trivially easy to reproduce!
So the problem: when I add a Text: Rich box filter to an image and I center it, it makes this weird padding that gets worse the farther you go to the sides.
To reproduce just make a Text: Rich, add text, center it and then move it.
My video is in 4:3 aspect ratio but I doubt that’s why