Bend Type - Material Inside / Outside + gap1/gap2 strange behavior

Dear shaise and other sheet metal developers. Your work and the results you achieved are incredible.

I am a mechanical engineer, with some modest experience in software design for mechatronic systems. My 3D background comes from CATIA and SolidWorks.

I noticed a strange behavior of sheet metal Bend function, which is presented with a simple model I attached.

Bend type: Material Outside is working as expected, except for gap1 and gap2. MaterialOutside

Bend type: Material Inside produces the below result. The same is true for Bend Type: Thickness Outside. In my opinion, there are two issues about this result:

The bend considers gap1 and gap2 from the whole vertical length and not from the corner.
The bend should cut only the material of relief and not other material of base plate.

MaterialInside

The result I would expect (apart from the correct gap1 and gap2) would be as presented on the picture below. Of course this is achievable with Extend Face feature, but this will not produce the correct angle on top (noted with circle on the picture).

CorrectWithExted1

About info:

OS: Ubuntu Core 20 (ubuntu:GNOME/ubuntu)
Word size of FreeCAD: 64-bit
Version: 0.20.2.29177 +426 (Git) Snap 517
Build type: Release
Branch: tag: 0.20.2
Hash: 930dd9a76203a3260b1e6256c70c1c3cad8c5cb8
Python 3.8.10, Qt 5.15.5, Coin 4.0.0, Vtk 7.1.1, OCC 7.6.3
Locale: English/United States (en_US)
Installed mods: 
  * Assembly4 0.12.4
  * sheetmetal 0.2.58
  * Manipulator 1.4.9
  * fasteners 0.4.22

Here is the FC file.

BendType-example.zip

I posted the same issue of Freecad fourm: https://forum.freecadweb.org/viewtopic.php?f=8&t=75272

Thank you for any feedback and keep doing a great job, as you do.

shaise / FreeCAD_SheetMetal

Bend Type - Material Inside / Outside + gap1/gap2 strange behavior #261