Hiya, So going from brasero 2.30.3 to 2.32.0 all the plugins (and the nautilus addon) build against the system libbrasero-burn.so rather than the one produced as part of the package. This is because of bad ordering when setting the LIBADD values in the Makefile.am files. Patch to follow. Once this is fixed, there are very few dependencies on libbrasero, so according to the guidelines specified in http://archives.gentoo.org/gentoo-dev/msg_220b43020cdeb2d32dce9abe6594375b.xml, this qualifies as a library "so widely used that revdep-rebuilding the system would be nearly impossible without having the old lib around", so it probably shouldn't be using preserve_old_libs...
Created attachment 250397 [details, diff] brasero-2.32.0-build-plugins-against-local-library.patch
Fixed in overlay. Thanks for reporting.