Images get smaller when scrolling up and down

[100CPU]

I have an app in which I display pictures. They are loaded from the directory and displayed one below the other (2 images per line) in 200dp x 200dp rectangles. So far so good.
As soon as I scroll up and down, the images get smaller and smaller. So small that only a small point can be seen at the end. Sometimes the first two pictures are affected. Then the bottom two. Always alternates. Sometimes they will return to normal size. That only happens by scrolling.

They are displayed correctly again when I restart the app.
This was tested on several smartphones, and I was even able to simulate the error in the emulator.

Is the bug known? I am using version 3.2.0