I'm using AE 2022. I have motion blur on for all layers. Layers with opacity set to 0% still show up faintly when motion blur is turned on.
I'm using AE 2022. I have motion blur on for all layers. Layers with opacity set to 0% still show up faintly when motion blur is turned on for the comp. It's as if they're set to perhaps 5% instead of 0%.
The same project behaves properly when opened in AE 2021. It's a bug you've introduced in 2022.
And now I'm supposed to click the "Post idea" button to submit this bug? My "idea" is that you fix it.

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Nate Foster commented
are you animating your opacity? opacity (for some reason) is also affected by motion blur and will leave a frame of partially transparent on the keyframe that is at 0%, but will go away on the next frame. it's very annoying and I don't have a good work around.
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Antoine Autokroma.com (Independent Developer of AfterCodecs, BRAW Studio, PlumePack, Influx) commented
Are you in Premultiplied or Straight Alpha ?