Why is bounce in place not sample accurate?

[luzid]

Bouncing a raw audio clip and inverting the polarity doesn't even sum to zero. The master channel shows a level of -157dB. Bouncing an audio clip repeatedly increases the level of the resulting mix. After 10 iterations it's at -130dB.
Out of curiosity i boosted the mix and it sounds like noisy crackling.
Apparently bouncing introduces some kind of quantization noise. I'm bouncing 32-bit without dithering.

The same experiment in Reaper works as expected. Zero error or noise.

Please share these findings with Bitwig. They got to BELIEVE that Bouncing/Bounce in Place has issues which need to be fixed...

I especially hate how Midi-to-Audio has it's issues, too. Because in this case, "Proving" the issues is much much harder than showing issues with Audio-to-Audio.

I have sent them an E-Mail today and even attached an example Project that shows the issue.
They said they will look into it.

The MIDI-to-Audio issues are even worse. At 200 bpm with very tight transients with Kick & Bass it's very cumbersome to resample when you have to correct for the timing offset :/

EDIT: Oh damn, du bist da Sternenherz! Ich hab mir in letzter Zeit einige deiner Videos angeguckt um mehr über Bitwig zu lernen.

[nowiamone]

Bouncing a raw audio clip and inverting the polarity doesn't even sum to zero. The master channel shows a level of -157dB. Bouncing an audio clip repeatedly increases the level of the resulting mix. After 10 iterations it's at -130dB.
Out of curiosity i boosted the mix and it sounds like noisy crackling.
Apparently bouncing introduces some kind of quantization noise. I'm bouncing 32-bit without dithering.

The same experiment in Reaper works as expected. Zero error or noise.

Please share these findings with Bitwig. They got to BELIEVE that Bouncing/Bounce in Place has issues which need to be fixed...

I especially hate how Midi-to-Audio has it's issues, too. Because in this case, "Proving" the issues is much much harder than showing issues with Audio-to-Audio.

I have sent them an E-Mail today and even attached an example Project that shows the issue.
They said they will look into it.

The MIDI-to-Audio issues are even worse. At 200 bpm with very tight transients with Kick & Bass it's very cumbersome to resample when you have to correct for the timing offset :/

EDIT: Oh damn, du bist da Sternenherz! Ich hab mir in letzter Zeit einige deiner Videos angeguckt um mehr über Bitwig zu lernen.

Good to know they heard about this now (again). Yes, Midi-to-Audio also is a particular pain point for me, because that's the main purpose of bouncing (for me)... and why on earth should i bounce in place, ever, when i know that the result will be NOT be 100% of the original sound...

Haha, yep, freut mich, dass Dir die Videos taugen. Viele "Lernvideos" habe ich allerdings nicht auf Lager