Microsoft support KB5124010, KB5124008: Known issues in this update, Highlights: semantic ambiguity

Hello, I have a question regarding Microsoft is announcement.

Hi everyone,I was reviewing the Microsoft support pages for the September 2026 Windows updates and got quite confused by the wording regarding the File History bug fix. Furthermore, my actual experience after updating doesn't seem to align with the official description. I'd like to hear your thoughts on this.

Question 1: Does the word after in KB5124008 imply a phased/partial fix?

https://support.microsoft.com/en-us/servicing/os/windows-11/2026/09/kb5124008-windows-11-24h2-25h2-security-update

In the Known issues section of KB5124008, Microsoft lists a few specific symptoms:

Incorrectly displaying a Reconnect your drive message.

The Last Backup timestamp might not update, and previously backed-up files might show No previous version available.

Application crash events referencing FileHistory.exe.

However, in the Resolution section, Microsoft states: This issue is resolved in Windows updates released on and after September 22, 2026 such as KB5124010.

What exactly does after mean in this context? Does it imply that KB5124010 did not completely fix all symptoms, and the remaining issues (like the timestamp bug) will not be fully resolved until the October 13th Patch Tuesday?

Question 2: Why did the KB5124010 release notes omit the timestamp issue?

https://support.microsoft.com/en-us/servicing/os/windows-11/2026/09/kb5124010-windows-11-24h2-25h2-update

I then checked the Highlights section for KB5124010, which states:

File History Fixed: This update addresses an issue where File History might fail to back up or restore files... Affected devices might incorrectly display a Reconnect your drive message...

Noticeably, it completely omits any mention of fixing the Last Backup timestamp might not update symptom. Does this omission mean that this specific part of the bug has not been fixed yet?

My Actual Experience:

My suspicions seem to be confirmed in my actual usage. After installing the latest KB5124010 update, my File History can now successfully find the backup drive, run properly, and back up new files (Symptom 1 is resolved). However, the Last Backup date/timestamp still has not changed at all (Symptom 2 remains).

To summarize my questions:

Based on Microsoft is wording, is KB5124010 only a partial fix?

For the lingering issues regarding the timestamp not updating and no previous version available, do I just have to wait for the October update? Has anyone else experienced this exact situation?