/usr/lib/libqt5scintilla2.so.12 is in libqt5scintilla2-12v5 2.9.3+dfsg-4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/libqt5scintilla2.so.12.0.2
/usr/lib/libqt5scintilla2.so.12.0.2