In the Codex App there is no way to correctly diff stacked PRs. If I have branches stacked main > feature-a > feature-b, when looking at feature-b I can only diff against main, which includes the changes done by feature-a branch. I would like the feature where you can look at the diff between feature-b and feature-a in this example.
Thank you for taking the time to share this feature request. We appreciate and value your feedback. While we can’t promise implementation or provide a timeline, we’re grateful you shared it with us. We’re closing this topic while keeping it visible for reference.