OpenGL shader unexpectedly function crops texture on Linux, but not on Windows

When I try to manipulate an image with QOpenGLShaderProgram the resulting image gets cropped to approximately 1/6 of the original size to the bottom left corner, but only on Linux.

On Windows 10 it works perfectly, with the same Qt version.

See the attached images on before running the shader and after running.

I tried it on Ubuntu with an nvidia gpu and on Fedora with an AMD gpu, both X11 and Wayland gives me this bug.

I also attached the test project I used.