If object as negative scale and attached objects with rotation, after saving and reloading the map rotation of attached objects is broken and irreversible.
There were a few negative scaling issue on our radar. Many of which have been fixed in our latest internal build. I attempted to reproduce this there but was unable to. So you should see this fixed and working properly in a future build.
Cheers, good to hear. A quick followup question, do you guys dealing with bugs prefer text-based step by step instructions or video showing it? For future reports
We generally prefer text of the exact repro steps, screenshots, and/or a small test project. A video is fine too, it just depends on how difficult the repro is to explain in text form. In that case, a small test project is usually better than a video.