i wouldnt report such a small thing, but its the only thing that i can see being a bug on firefox
ive been trying to move from chromium to firefox, and only so far this has been bugging me a little because sometimes it throws me off while making an more complicated system
its not important to do right now, but for when you have less stuff to do
This is a known issue related to Firefox that prevents absolute positioning from working correctly.
Inventor does not officially support Firefox due to a variety of standard web platform features like this being broken. We will only fix critical issues (pages refusing to load, etc.) but not minor/cosmetic issues like this. In this case the indicator itself would need to be fully redesigned to fix the issue.