Bamboo "Bitbucket server repository triggered" trigger stopped working on upgrade

I previously had the Bitbucket trigger working properly, but after upgrading Bitbucket from 4.3.0 to 4.6.1 and Bamboo from 5.10.0 to 5.11.3, commits are no longer triggering builds.
I've checked the logs for any errors, but nothing is showing up. I have disabled and reenabled the authentication on the application link (on both sides) and that seems to have helped for a single build, but is no longer picking up changes again.