AUTO BRK OFF callout cancelled when using A/T disarms

In 1.2.6, with AUTO THROTTLE DISARM key binds, autobrake disarms normally when single push on A/T disarm, showing AUTO BRK OFF orange warning on PFD and aural callout.
Since 1.2.7, after normal rollout with autobrake activated, single push on A/T disarm only shows PFD warning for half a second, with single chime aural, but no AUTO BRK OFF callout.
This behaves like the callout is cancelled by pushing A/T disarm button AGAIN AFTER autobrake disarm, to suppress the callout, according to A350 FCOM. However it now happens with only one push, which should only deactivate autobrake, not the callout.

This issue is confirmed by 10+ flights after A350 1.2.7 updates, and still persists on 1.2.8.
Also, if deactivates autobrake by pushing A/BRK button, the PFD warning displays normally, and aural callout is sounded.

I noticed there's a topic back in 2020's A350 section about autobrake off aural callout issue, someone stated that AUTO BRK OFF aural should only sounds when deactivates above 80kts. However with latest FCOM and 1.2.6 aural sounds normally when I deactivates at about 40kts, I don't think that is the issue.