Select a block of text and create a comment (either through the menu system or using Command/Alt/C). Instead of the comment associating with the block of selected text, it associates with the start of the block. This reduces the value of the comment tool.
Suggest modifying the comment tool to track against a span of text instead of a point.
This is a duplicate of bug 38244 and is fixed in 4.0.
*** This bug has been marked as a duplicate of bug 38244 ***