Project Rendering 2px borders on side of map

[oDinZu]

What is the bug or the crash?

QGIS is rendering 2px size borders on side of the map. I picked the layer to match exact coordinates.

When that 2px border is on the sides of the map causes map transformers to bug out and adds a visible solid line that looks unnatural.

I would prefer a raw render from QGIS software without making use of other software compression algorithms, potentially reducing the quality of the QGIS rendered image.

Steps to reproduce the issue

Goto Project > Import/Export > Export Map to Image
Calculate from "Layer"
Save as PNG
Open Image in GIMP
Investigate sides of PNG.

Versions

3.40.3

Supported QGIS version

• I'm running a supported QGIS version according to the roadmap.

New profile

• I tried with a new QGIS profile

Additional context

Manually drawing on the map is a bit challenging at such high resolution and would prefer to match precise coordinates without cutting up the map by user error.

Update: I tested on a lower DPI 96 and that didn't produce borders on the sides of the map.

The original image I am rendering is 1600 DPI at about 30,000px wide and produces them borders on the side. The software produces a warning when the image is larger than the original, but I reduced the size and locked the aspect ration to accommodate that warning and results in the borders on the side of the image.