the container line is gone. I’ve drawn (badly) a dashed line where the container was visible in the previous screenshot.
To my experience, this bug happens whenever you have a container high enough to fall out of some virtual space I assume Aeon is using to keep scrolling as smooth as possible, but I suppose that when something is far enough, it gets deleted from memory to free some space, thus the line disappearing.
While this bug is not disrupting anything in my workflow, it’s pretty annoying cause you keep asking yourself “oh, wait, was this event in a parent one, or not? Let me check…” and you end up scrolling up and down pretty often.