I, too, encountered this issue this morning. A few additional notes in case they are helpful:
- First jump pad was placed in the water to the West of Slum Lakes. The issue started after hitting it for the first time, and continued to play the sound as if hitting it at zero range (no matter how far away I moved).
- Second person in my party hit the jump pad and triggered the issue for them, as well.
- After dropping a second jump pad and hitting it, the sound of both jump pads would play intermittently. The sound effect would stack with each consecutive jump pad.
- Going down did not eliminate the sound.
- Going down and being revived did not eliminate the sound.
- Dying did eliminate the sound.