When you are working on different versions or on documents with similar content, i.e. work with several documents or instances of LO Writer simultaneously, you might easily loose the oversight about which document came from which file on which path.

Up to version 7, one could go to Save as and see to which directory the storing dialog defaults to.

At least in
Version: 25.8.0.0.alpha0+ (X86_64) / LibreOffice Community
Build ID: 4957d832c76598e78a57324dad5b4de7345a33e2
CPU threads: 8; OS: Linux 6.8; UI render: default; VCL: gtk3
Locale: sv-SE (de_DE.UTF-8); UI: en-US
Calc: threaded
this is no longer the case (but the bug might have leaked in earlier, it does not happen day for day that I struggle with not knowing which of several open documents came from which directory).

In version 25.8 Save as defaults to the directory into which LO Writer has saved the last document, not the directory from where the current document was loaded or where the current document has been stored most recently in this session. 

This is a loss of a useful functionality which should be reverted to the old state, where each document kept track from where it was loaded into LO Writer and which was updated for the session when one decided to store it in some other directory.

To reproduce:
1. Open a recent document into LO Writer, which has been saved recently. If in doubt: just store it again..
2. Open some quite old document from another directory.
3. use File>Save as to save the second document
Result: LO Writer suggests to store document 2 into the directory of document 1.
Expected result: suggest do save in the directory of document 2, from which it originated.

Note: The current behavior may be more desirable for someone who always works from an inbox (directory) to an outbox (another separate directory). However, I think this is a very specialized working environment that does not justify losing the ability to quickly find out where a document was loaded from. Perhaps this could be set in a configuration: “Always save as by Default to” with the selection options "Current directory/Directory of last save operation/This directory: ..." with the option of specifying a fixed storage directory for the last selection as outbox.