Confirmed on 3.6.9065. Specifically in the Playing Tracks list, if Track Information is set to display the selected track, and the selected track is deleted, that information will continue to show up in the Track Information panel even though a different track is selected. You have to click a different track from the (newly) selected one in order to get it to update.
In brief testing, it doesn't matter if the selected track is being played or not. Tracks in the main panel behaved as expected, as did the Lyrics panel.