b++ Internet Explorer ordered list non-incrementing list item
This bug is already documented at QuirksMode. Basically, instead of normal list-item increment: 1, 2, 3 and so on, IE 6 renders 1, 1, 1,…
It’s sometimes triggered by setting any value for an ol’s width property. Read more about it and see test pages at QuirksMode.
Setting and overriding list-style property rules for a list-item does the same mess. For example:
li { list-style: none; }
ol li { list-style: outside decimal; }
would trigger this bug.
The workaround is more than obvious – list-style property should be set only for list items in unordered lists.