I'm having trouble triggering a build from a Git tag

Question

I want to trigger a build when any of the following is true:

• When there is a change to a particular branch (dev) and a subset of folders was modified (paths)
• When a git tag that matches a pattern (RC* or Release*) is set and a subset of folders was modified (paths)

When I add a paths statement to my yaml build template only my branch trigger fires. I am unable to trigger off of a tag. When I remove the paths statement both my branch and tag filters work.

What am I missing?

This triggers on branch = dev or tag is either RC* or Release*

trigger:
  branches:
    include:
      - dev
  tags:
    include:
      - RC*
      - Release*

This triggers on branch = dev only.

trigger:
  branches:
    include:
      - dev
  tags:
    include:
      - RC*
      - Release*
  paths:
    include:
      - /site/

Answer 1

I can reproduce your issue here. This issue has been confirmed as a bug and move to the product team . Please follow up this case and you can vote it to increase the priority. Sorry for this inconvenience.

Below is my reproduce:

When I added the paths trigger to the yaml, I committed the READ.md file and added the tag to the commit. However, it does not fire tag trigger. After I removing the paths trigger, the tag trigger will be fire normally.