We're on Bamboo version 5.15.7 build 51521. I have a linked repository on Bitbucket Server that just contains some helper functions used by many builds. I don't want any builds to trigger based on changes to this linked repo. However, we've been unable to find any config that prevents dozens of builds from being triggered.
Shouldn't this setup prevent builds from being triggered on changes to this repo:

I've tried with .+ as well and only with the file pattern. Any suggestions?