Some merge changesets showing 0 files changed

[Michael Nicholas]

Using bitbucket git and crucible.  All changes are made on feature branches.  Those branches are then merged to an integration branch, which is merged back to master.

When I try to create a review in Crucible, I do one of two ways: Select all the changesets in the feature branch OR select just the changeset where the feature branch is merged into the integration branch.

These have worked fine for over a hundred reviews of several hundred branches.  Recently I came across an issue where the merge of the feature branch to integration branch in crucible shows 0 files changed so I cannot set up a review.  Looking in git, I can see the changeset has files changed.  The changeset isn't missing completely because it shows the start of the sha-256 in crucible as usual.  It just does not have the actual changes.  I see this on several branches, not all consecutive, with no discernible pattern.

We tried stopping/restarting crucible to make sure it is in sync.

Any ideas?