SOLVED: Anybody an idea why THIS is happening in PI using WBPP? (Uwe Deutermann)

SOLVED: Anybody an idea why THIS is happening in PI using WBPP?

Revision title: unchecked local normalization

Ok, I am a bit stunned right now, I must do something wrong, but I could not find out so far, and I tried hard. Cannot tell how many stacking trials I did in PI (and this is not the fastest as everybody knows!).
Since I switched to the new PI version I see these ... well ... how to describe this best? Spots? Well, it is clear what I mean when you look at the left side of the image. Both the PI and the DSS image is just an STF on the raw stacked image, no processing whatsoever. You might remember that I was whining about my flats being bad in my last 2 images or so. Well ... now I am not that convinced anymore that they are bad (they showed the same sh....). I will uninstall 1.8.9 and go back to 1.8.8 PI to see if this shows up there as well, I believe it won't. Which means, some of my parameters are set incorrectly, otherwise I would have heard from others about it, or? Maybe someone has an idea what that could be, I would be super happy!
Processing those base images is a NIGHTMARE. All channels have the same problem, first I thought it might be the camera, but after I stacked in DSS the VERY SAME images, flats, darks I do not think so anymore.
The example above is the OIII channel (I might add the base LRGB image ... hilarious 😢!), 89 x 600 seconds = 14.8 hours of Jacoby 1 (THE challenge 😊😊). I do have a processed image, but I think I could do much better if the base stacked images would be better.
So I cross my fingers that someone knows what I do wrong!!

Additional info: I tried in PI to stack them without flats, without darks, without any corrections, same result. Each individual raw image does NOT show the wavy pattern!

Version B is the stacked image without LN ... and indeed, it looks great!

Thank you all for your input and advices, sending a lot of hugs to everybody who passed suggestions!!

Original
Final
B

B

Title: unchecked local normalization

Description: And BINGO! The LN was indeed the culprit, I just wonder now why THIS option is default checked.
Thank you so much for the INSTANT and GREAT feedback! Astrobin at its finest!!

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Status	Advanced success
Started	...
Astrometry.net job	5898275
PixInsight job	4G9UM01JB0GQ2S06RW3SDWASGEUBCMOG
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RA (center)	15h21m53s.77
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