The problem is caused by list autonumbering scheme in table’s first column.
Try to change it to a simplier form as a workaround, while we shall try to fix the problem.
To be more exact, the problem was caused by list level 3 starting immediately after list level 1 and list label using numbers for all list levels (1.1.a). List number for level 2 was not internally initialized. I fixed this and it will go out in Aspose.Word 3.5 at the end of January.
If you want a workaround, make sure that when you use list numbers such as 1.1.1, you don’t have gaps in list levels. E.g. level 2 starts after level 1, level 3 starts after level 2 and so on.