Either the STL file has indeed one or more errors - then this should be analyzed. However, since Benchy serves as benchmark test now for some years, this is unlikely. Rather, this issue points towards an error in Luban.
lol, where did you get the idea of pleasing me? Didn’t you ask for opinions?
Benchmarking the outdated software on how it interprets an STL against one other slicer with the same codebase - isn’t really providing any useful info. You didn’t even tell us what version of Cura is used. Lot’s of people in the community use other slicers because of some degree of limitations Luban provides within given application. We all know it’s not perfect
Did you try using fresh version of Luban? Did you check all the mainstream slicers out there if they exhibit the same behavior? It very much may be an issue with benchy model, that newer version of Cura slicer just work around,due to how minuscule the issue is. Did you try not repairing the errors and slice it anyway then check the sliced model for errors?
P.S. Not trying to tread on you, just my opinion. Benchy is not a good thing to print regardless. It has no real life application and goes straight to waste (don’t start on any plastic can be 100% recycled). IMHO, after going through calibration process for every aspect of 3d printing, it is much more responsible to print something functional but not of critical importance to have nice appearance - you can still use the part printed, and you can still analyze what can be improved by watching it print and inspect the ready print.
Blender 3dprinting toolbox counts 202 intersecting faces for example. Also the topology of the benchy looks like garbage, so it doesn’t surprise me that there are problems with it =D
In fact the “errors” are also found in Luban 4.8.0. And just to remind you: In another thread you state yourself that the slicing core of Luban is not really top notch.
I am using Blender for many years in my computer graphics course at the university, and ChatGPT in two research projects. If you need any support, let me know.
Because I want to use Ideamaker or Simplify because of their superior user interface. But they dont have tree supports Also I thaught it would be fun to play around a little bit with the idea of creating supports with the use of blenders fluid sim
I’m currently using chat GPT to develop a addon for blender that will generate supports to for 3dprinting…
Also I thaught it would be fun to play around a little bit with the idea of creating supports with the use of blenders fluid sim 
