[Bug] pm7 files sometimes layer image decoded is not correct

[ipa64]

System

UVtools v5.0.2 X64
Operative system: Darwin 22.6.0 Darwin Kernel Version 22.6.0: Wed Jul  5 22:21:56 PDT 2023; root:xnu-8796.141.3~6/RELEASE_X86_64 X64
Processor: Intel(R) Core(TM) i7-4870HQ CPU @ 2.50GHz
Processor cores: 8
Memory RAM: 8.69 / 15.56 GB
Runtime: osx-x64
Framework: .NET 9.0.0
AvaloniaUI: 11.2.3
OpenCV: 4.9.0

Sreens, resolution, working area, usable area:
1: 1440 x 900 @ 100% (Primary) (On this)
    WA: 1440 x 875    UA: 1440 x 875

Path:       /Applications/UVtools.app/Contents/MacOS/
Executable: /Applications/UVtools.app/Contents/MacOS/UVtools

Printer and Slicer

• Printer: Anycubic Photon Mono 7 (pm7 file extension)
• Slicer: Anycubic Workshop 3.5

Description of the bug

Sometimes wrong decoded image layer.
Original layer image

Layer image decoded by uvtools

How to reproduce

Open the unziped attached file Layer_202.pm7
goto layer 202

Files

Layer_202.pm7.zip

[github-actions]

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[sn4k3]

The file you have attached shows exactly like UVtools if you open on Anycubic, try yourself and report back.
It might be a bug on slicer and not UVtools

EDIT: Sorry I misread, I will take a look

[ipa64]

I think it’s always empty closed surfaces sometimes seen as full.

[sn4k3]

I know the problem, solution however is out of my ideia yet.

This is what AC produces, and there are overlaping lines which makes hard to determine the fill

[ipa64]

If you need, I have a file with more layers concerned, with both error Island and Overhang caused by same issue.