As highlighted in #2769, the generated changelog looks weird when the PR title has a [skip ci] tag. It looks like this:
Some real change skip ci] ([#1234)
instead of this:
Some real change [skip ci] (#1234)

This just looks weird, and should be fixed. One way of fixing it (that I would recommend) is to actually remove all references to [skip ci] from PR titles when generating the changelog.