I think I found a bug
That’s very possible.
Each line of code has the potential to create multiple bugs, and Lightning has 15.000+ lines of code.
We are very thankful for every report because every bug fix makes the product better.
Report a bug from within Lightning
We have added a feedback form within the product, so you can reach us directly.
Just click the Send Feedback button in the Lightning toolbar (with an assembly open) or click Tools > Lightning > Send feedback.
Then a window similar to this Drew window will pop up:

Report feedback via email
Check out How can I share my feedback? for instructions on how to send a helpful bug report.
Thank you in advance for helping to improve Lightning 🙂