Remotely changing the document's title case is not sent back locally

Steps to reproduce:

1. server: create a File abc.txt
2. client: wait for sync completion
3. server: rename abc.txt to ABC.txt

Actual result:

• nothing

Expected result:

• client: abc.txt must be renamed to ABC.txt

Note: same results on GNU/Linux and Windows, so it is not related to the OS case sensitivity.