In Accordance 8, however, when I option-click, the line is always given a subtitle level of 1, regardless of the subtitle level set above it. I have to keep option-clicking to get to the desired subtitle level.
Was this an intentional change or a bug?
If it was intentional, note that the Help file still describes the earlier behavior:
Pressing the option key while clicking in the margin changes the cursor to T+ and creates a subtitle indicated by a numeral. The first level of subtitles are marked with a 1, option-clicking again raises the level, while shift-option-clicking changes the cursor to T- and lowers it. Option-clicking on another line below a subtitle starts with the same level as the previous subtitle.