Buzzer from Grove Base Kit for Raspberry Pi not working on Raspberry Pi 4

Hi there,

i am using the “Grove Base Kit for Raspberry Pi” with a Raspberry Pi 4 with 8GB RAM.
I tried to follow the tutorial to use the parts of the kit.
At “Lesson 1: Buzzer” I stuck now.

I connected the buzzer to the PWM port and wrote the code. No sound.
I set up the same code on a Raspberry Pi 3 Model B+ and it worked instantly.

So I decided to search a bit through he web and found this post:

The guys had the same Issue, but there was never a solution…
Can anybody help with this issue or has a workarround?

Best regards