Something has recently changed with the forum colors in Dark Mode when using the menus or tagging other users. The row highlight is white which makes most of the row unreadable for me. Here is one example with tagging:
same when I go to any menu items… mostly white background. The capture I provided actually shows the text better than I see it on the screen. I can’t figure out where I can adjust the colors. It started recently (last week I believe). I see it on both desktop and tablet. If I switch to Light Mode… everything appears fine and readable.