It sounds like your system is finding the secondary copy of libtbb.so.2, so that's a function of the dynamic loader. Run 'man ld.so' for more information about how to configure it (to ensure /usr/lib/x86_64-linux-gnu is searched first).
It also appears your Ubuntu-supplied copy of libtbb.so.2 has the required symbol:
000000000001fe20 T tbb::interface7::internal::task_arena_base::internal_current_slot()
It sounds like your system is finding the secondary copy of libtbb.so.2, so that's a function of the dynamic loader. Run 'man ld.so' for more information about how to configure it (to ensure /usr/lib/ x86_64- linux-gnu is searched first).
It also appears your Ubuntu-supplied copy of libtbb.so.2 has the required symbol:
000000000001fe20 T tbb::interface7 ::internal: :task_arena_ base::internal_ current_ slot()
So yeah, probably not an Ubuntu bug.