/usr/lib/wxSmithContribItems/libwxflatnotebook.so.0 is in codeblocks-contrib 10.05-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/wxSmithContribItems/libwxflatnotebook.so.0.0.1
/usr/lib/wxSmithContribItems/libwxflatnotebook.so.0.0.1