Sound components cut short

Not that upgrading is enough to solve the problem, but yes there have been multiple PsychoPy bugfix releases in the last few weeks! The latest version is 2020.2.10. I believe your project may have been initially created using 2020.2.6. As it happens, earlier versions have no notion of targeting a later one and that I believe is the reason 2020.2.7, 2.8, or 2.9 also seem to be missing from the dropdown menu in the screenshots.