This is most obvious (and most problematic) when using a Dark Theme. If you are editing the name of an outliner item, while the text is selected it follows the theme rules (or seems to). If the text is unselected (as you type new text) it is always black, even if its on a black background, making it impossible to see until you accept the new text and it goes into display instead of edit mode. Minor bug, but definitely annoying.
I’m going add that I find this annoying. I can usually just barely see it, as I changed from Dark Mode to Solarized Dark to get some level of contrast between the text and the background. On smaller screen, like my laptop’s it just hurts my eyes to attempt to deal with, so I have to delay working in the outliner until I get home.