I use org-indent-mode and (setq org-hide-leading-stars t). This mostly works, but sometimes the supposedly hidden stars are visible as white (my default foreground color) on some headlines. I'm not sure, but I think it's always the first and / or the last sibling headline that show this problem. The "middle" headings are never affected, if I remember correctly.
Does anybody else have this problem? Is it a known bug?
I've attached a screenshot (in a Word document, because my work computer doesn't have MS Paint or similar for some bizarre reason).

- AIX 5.3- Emacs 23.1.2- Org-mode 6.34c

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Christer Enfors