UPDATE: See post 4 below.
I just upgraded my stack to 6.6.0. When using Kibana, I typically have most of my dashboards using dark theme. I just noticed after the upgrade that every timelion visualization on my dashboard now has a big white rectangle close to the legend labels. I haven't seen anything about this, but can't figure if its just something unique to me. Thoughts?
I should add that when I turn dark theme off, it goes away. When I hover over the labels and select them, it modifies the lenfth of the box.
UPDATE: It definitely appears to move around with the legend "box" so to speak.