Wavelab Pro 9.5.35 Playback Clipping

I usually pull down the envelope back to 0 manually.

I just tried with the right click menu “Reset level to 0 dB” and it goes back to 24 bits…
So, i’m guessing the 0 I see with the popup display isn’t an exact 0

I’m thinking of reinstalling from scratch. I could not find the uninstall option in the installer.
Thanks