Issue when using boolean operations with cubic contours that have overlapping handles

[ParanormalChicken]

I am working on a font that relies heavily on cubic curves that have overlapping handles. When performing a boolean operation with these curves, FontCreator displays strange behavior.

In the first contour, after the operation, the center point of the inner curve behaves like a handle. I applied an union operation to the whole glyph but the second contour is an intersection.

Before union operation

Screenshot 2024-04-30 164835.png (28.81 KiB) Viewed 164 times

After union operation

Screenshot 2024-04-30 164953.png (27.56 KiB) Viewed 164 times

Applying an union operation in this situation causes the glyph to become empty.

Before union operation

Screenshot 2024-04-30 165021.png (29.11 KiB) Viewed 164 times

After union operation

Screenshot 2024-04-30 165029.png (20.18 KiB) Viewed 164 times

[Erwin Denissen]

Please send the project file to us.

[ParanormalChicken]

I'm not entirely sure how much this will help, because this is not a project specific issue, but I can provide the project file. Many of the composite glyphs can be used to demonstrate this behavior, for example, Oslash, Ccedilla, and lmiddletilde.

[Erwin Denissen]

Confirmed. This issue will be fixed with the next upcoming release. But there will probably remain some rare cases where it fails.