Comment 1 for bug 2018660

Doesn't replicate for me in KDE (current on Arch) with both X11 and
Wayland. Opening the edit metadata single dialog with a single book selected results in
the book being scrolled to the center of the screen as expected.

It may be some interaction between the version of the window manager on
your system and Qt. Hopefully an update will cure it given that I cannot
replicate with up-to-date KDE.

In any case without being able to replicate there is not much I can do
about it. One thing you can try is create a new empty library with no
custom columns add a few books and see if it replicates there. If not
then attach the metadata.db file from your library folder and I will try
to replicate with that.