Created attachment 152163 [details]
left is original image. right is after an advanced export at 40% the size

SUMMARY
I’m using windows and the latest version of Krita.

problem: I use advanced export art to make the image smaller. during the resizing the “layer style” outlines on my drawing get bigger while everything gets smaller.
For example, the outline is opposed to being 10 pixels wide but when I make it smaller by 50% in the export, the outline becomes twice as big.

After doing some more testing, it seems like it's an order of operations issue. when using comic manager the “layer style” outline is not an issue but when using advanced export and resizing, the stroke line gets thicker. so I imagine the style is being added after the image has been resized causing a 10px line to be bigger in comparison because the pixel density is smaller after the resize.
NOTE: If you are reporting a crash, please try to attach a backtrace with debug symbols.
See https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports
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STEPS TO REPRODUCE
1. make a file
2.  draw on empty later
3. add a stroke effect (bigger the better) using "layer style (no other effects were tested but I imagine they do the same thing
4. go to advanced export and resized the image by about half using the percentage
5. go to the image and notice the outline has grown after the export

OBSERVED RESULT
advanced export when used to resize images, with Stroke layer styles, causes the outline to grow or shrink 

EXPECTED RESULT
advanced export when used to resize images, with Stroke layer styles, causes the outline to grow or shrink 

SOFTWARE/OS VERSIONS
Windows: x
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION