Folders Don't Expand / Collapse

[Indigo]

I've been using MLO for a few days. Nice product. For some reason
new folders do not expand and collapse. They remain fully expanded
and non-responsive to menu commands to collapse or expand and to the
F6 / F7 keys. They are also missing the + /- expand / collapse
handle. The folders that I created before today continue to behave
normally. Anyone see this before? Seems like a bug. Is there a work-
around?

[pottster]

If you have "Hide completed tasks" (top left corner) selected and all the subtasks of a folder are completed the +/- sign will disappear as there is nothing to expand/view. You can test if this is the issue by unselecting it. Otherwise, I suspect this is a problem particular to your setup, and would suggest reinstalling MLO.