Strange "veil" on the Bottom of PLA Matte prints

Hello,

printing with my new P1S has with PLA Matte filament a weird effect:

From the Logo to the Text (specifically ‘mb’) there’s a white transparent “veil” on the surface, also below the text - the same applies to the left part. The white effects are not reflections of the light. They are embedded in the material - not detectable by touch. The surface feels perfectly homogenous.

I let the plate cool down entirely before removing the parts.
The plate is new, the original one delivered with the printer, I have cleaned it thoroughly with isopropanol - to no avail.

Setup
P1S / AMS 2 Pro
Bambu Lab PLA Matte Filaments
Bambu Studio with default values for the filaments

This happens with all prints - not with specific ones.

Does anybody know where this could be coming from/what I’m doing wrong?

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If you search the forum for “stress marks” you’ll find a ton of threads about it. Depending on the build plate and the filament it’s really hard to avoid at times. The most recommended solution is a heat gun or other heat source. Be careful to not deform the part in the process. Usually people will also recommend letting the part cool on the plate but I see you’ve already tried that. Here’s a vid:

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