nesting not working correctly

[sketet]

This is my first time using nesting software, so I may be missing something obvious. I am completely new to this type of tool, although I do have a fair amount of experience in CAM workflows.

Describe the bug
I installed Deepnest and it seems to run correctly. I am able to import part drawings without any issues.
However, the nesting process does not work as expected, the parts are not properly arranged on the sheet.
I created a very basic test case with simple shapes, the result is incorrect. The software does not generate a proper layout (nest) on the sheet.
I am attaching screenshots to better illustrate the issue and show the unexpected behavior.

Expected behavior
All parts should be placed inside the sheet boundaries and arranged in a rational, space-efficient layout, without leaving large unused areas.

Screenshots
-- Test case

-- Start nesting (immediately after starting)

-- After 10 minutes

-- After 40 minutes

Desktop (please complete the following information):

• OS: Ubuntu 24.04
• Browser: Firefox
• Version: deepnest-v1.5.6-linux-x64

[GDurrens]

Hi.
Looks as if the convex hull of the sheet is used instead of the sheet's real shape.
Could it be ?

[Dexus]

To be real, you always using the convex or a shape that does not have 30.000 points, but maybe 120, same shape - smaller time consuming. But I know we have some Bugs, in the code, that should fixed already to not doing this.