Exporting to pdf

I have formatted a file for publication on Amazon. It has many sections, headers, and images. When I export it to pdf, many things are changed in the process. Column sections in which the text is aligned at the top, are no longer aligned. On an a number of pages, the title appears at the bottom of the previous page. I go back to the LO document and it is correct, so the changes come in the conversion to pdf. Is there any way I can correct this, or should I go to another pdf conversion program?

I’d suppose that to be a bug, with related need to file the request…

We do not know the version you are working in, nor how complex your file is.

Try out https://en.pdf24.org/ - if the results are okay LO has got a bug as Mike Kaganski mentioned.

I checked more carefully and the problem was when I saved and reloaded the document. I’ve post3ed the problem elsewhere in this forum. Thanks for the responses.