@freakygs found the solution -- go to your doorbell settings > Paired Chimes > select your hub > change the duration. Hope this helps!

  @Ollieoos , yes it did resolve the issue. Thanks mate.

Kinda poor design having to setup chime duration at 2 places.

  @Ollieoos 

Thanks. Came here for this exact problem. 

Only since the latest firmware update. 

Set duration to same as ringtone now.

Now working for me

Would have been good if Tapo gave a notification along with firmware of this change.

also had this issue AND the chime set to jingle bells, so it blasted jingle bells at full volume in february for 1 minute. very unhappy with this change, why force additional settings layers on us AND not even inform the user!??

  @Ollieoos hi where is paired chimes ? My model is D230 of doorbell. I have same issue mentioned here.

  @SINGHU 

I had the same issue

This is the solution that worked for me.

Just after the installation of the hub you set your desired ringing time.

Only after that you install the doorbell.