Index schedule release/dev builds but webhook everything else trigger not working

Hello!

I am trying to configure my jenkins multibranch pipeline in a way which seems like it should be pretty common and straightforward, but running into issues. I simply don’t want to build every commit, only those in a Pull Request, dev, and the dedicated release branch channel.

Specifically, I want to build specific branches (develop, release/) on indexing (set at 1 min interval), but no other branches on indexing. Only webhooks (BitBucket) should trigger other branch builds. I do see the webhook events coming in, and that works fine. But the index build “exception” (which feels like I am doing some weird inverse logic for jenkins to make this work) doesn’t seem to be scheduling the build for release as shown here:
Checking branch release/v_49
‘Jenkinsfile’ found
Met criteria
Changes detected: release/v_49 (null → 94deaf32b2a6c772920907a1535f95f457692576)
Did not schedule build for branch: release/v_49

Here is my configuration:

Why is it not scheduling? Is there any way to look at logs that would show what decision/criteria determined the build should not be scheduled?

Jenkins setup:
Jenkins: 2.452.4
OS: Linux - 5.4.0-208-generic
Java: 17.0.12 - Eclipse Adoptium (OpenJDK 64-Bit Server VM)