BuddyPress.org

@shonty try https://buddydev.com/plugins/buddypress-clear-notifications/

@shonty try to disable server-level cache once, might be object or varnish cache is creating some issue.

@shonty Is this a new installation or is this an old install where you changed from another theme or imported forums from e.g. phpbb to bbPress, etc.?

Just like shanebp, I cannot replicate the issue as well.
Do provide more info about your installation – https://buddypress.org/support/topic/when-asking-for-support-2/

@shonty try to debug via deactivating other plugins keep only BuddyPress and bbPress active