Where do I report bugs in the Image builder service?

You can post a bug report here on the forums. The community and AWS team frequently scans the forums for issues. Alternatively, if you have a support plan, you can report the bug through a normal technical support ticket for image builder. The AWS team will investigate and analyze the causes of the bug. When reporting the bug, include all the documentation and output that led up to the error you are experiencing.

If you have a support plan, that's a good way to report a bug.

If you don't I recommend using the feedback button in the bottom left of the console, it will show you a form where you can describe the issue (and will go to the team directly):