Some of inline comments are resolved by confluence automatically after another user saves changes.

It happens really often in objects like table or list. It is often not possible to reopen such comment.

It looks like if confluence sometimes interpreted table changes (new rows/columns) as table removal and creation of a new one which resulting in closure of all inline comments even those not related to added/deleted columns/rows.

At least I would like to be informed that my changes will resolve or resolved some of inline comments.

Another thing is that it is impossible to comment strikethrough text (perhaps it is a separate issue).