Archived issue #0033770

Regression: STEP file opened in FreeCAD 0.20 with unexpected sphere

CommunityOCCT:Data Exchangenew5 public notes

Description

=== BUG ===
OpenCascade 7.6.2 (as used by FreeCAD 0.20) displays an unexpected sphere for this STEP file
=> see the huge orange sphere on the attached screenshot

=== Regression ===
OpenCascade 7.5.3 (as used by FreeCAD 0.19) does not yet display this unexpected sphere
=> this bug was introduced with a later/newer OCC version

Steps to reproduce

+ start FreeCAD 0.20.2
+ File > Open ...
+ open attached STEP file
BUG: see the huge orange sphere on the attached screenshot

Additional information

=== attachment ===
reproducer / STEP File: Attachment 3 (STP)

Public activity

5 archived notes

Participants are labeled by their role within this record.

01Author2025-06-17 11:27

Attachment 3 (STP) (416,526 bytes)

02Author2025-06-17 11:33

FreeCAD 0.20.2 displays an unexpected sphere

Attachment 2 (PNG) (319,805 bytes)

03Author2025-06-17 11:39

still OK with FreeCAD 0.19
using Open CASCADE Technology 7.5.0

Attachment 1 (PNG) (120,422 bytes)

04Author2025-06-17 11:40

Hello Commenter 2
I attached the two screenshots and STEP file for reproduction.
We wonder whether this regression could be fixed any time soon, pls?
Best,
Peter B.

05Commenter 32025-06-17 12:19

Dear Author.
We have a similar issue, which have targer 8.0.0 and i will include that issue to be related to the planned.

The issue: https://github.com/Open-Cascade-SAS/OCCT/issues/378

Now the Mantis is not active bugtracker, please use GitHub issues.