Why is apt upgrading suggested packages while installing a package (no command line options)?

I'm trying to understand how aptitude works. I've downloaded all dependencies of a package (afaik all, by substituting empty dpkg status file). Later after substituting back current status file of the system when installing the package I saw apt install tries to download a package that was listed in suggested when I downloaded all dependencies. Suggested is later in list of packages to be upgraded when apt/apt-get was run w/out options. How could such thing happen? I did tests as above for some packages before and had no need for suggested, so seems it is rare occurrence. I want to understand details of this case, how can I investigate? (I've run dpkg -s and "suggested" one is shown as installed, what else?). The package name, btw is kdenlive and one of "initially" suggested is poppler-utils. I don't want to disable upgrades completely, I just don't want to upgrade suggested ones. ~$ aptitude why kdenlive poppler-utils p kdenlive Depends libkf5filemetadata3 (>= 5.0.2+git20140925) p libkf5filemetadata3 Recommends libkf5filemetadata-bin (= 5.92.0-0ubuntu1) p libkf5filemetadata-bin Depends libpoppler-qt5-1 (>= 0.46.0) p libpoppler-qt5-1 Depends libpoppler118 (= 22.02.0-2ubuntu0.2) p libpoppler118 Recommends poppler-data i poppler-data Suggests poppler-utils