AP/FD modes change indicator sounds

[WaisingYung]

Hi team, thanks for your team builds a wonderful plane at first.

I have some questions about AP/FD modes change indicator sounds.

for example, when I on final and disengage autopilot, the FD modes will change and following a triple click audio indicator sounds.

But I found that this sound will not sound until about 10seconds after the mode changes.

Is this a feature of the A350? Or is it an issue that needs to be fixed?