Have you tried any “self-help” steps to rectify this, such as: Rebooting the Roon core OR Roon edit album, re-identify?
If that does not work, try moving the 10 FLAC files to somewhere safe (that Roon is not watching), delete the album from Roon and perform a library cleanup.
Once done, move the files back into your library and let Roon import them from scratch again.
If that does not work, then please give details of your Roon setup: hardware, storage etc. and the details of the album you are having trouble with.
@support may wish to received a copy of it so they can perform some import tests with it.