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IDProjectCategoryView StatusLast Update
0002710SketcherBugpublic2017-04-28 20:38
ReporterSternaAssigned To 
Status newResolutionopen 
PlatformMacBook Pro, Early 2011OSMac OS XOS Version10.11.6
Product Version0.17 
Target Version0.17Fixed in Version 
Summary0002710: Freecad doesn't show sketch elements added when overconstrained
DescriptionIf you have an overconstrained sketch, Freecad will not show sketched features drawn without any constraints. The features show up by either adding another feature and creating auto constraints or by saving and re-opening the file. If you are in the state with any "hidden" features and press undo (cmd+z), Freecad crashes.
This bug works the same way in both version 0.16 (6706) and 0.17 (8471).
Steps To Reproduce1. Open the attached file (HiddenSketchFeatures017 or 016) file
2. Add any number sketch elements without auto-added constraints. They will all be hidden. Some will even crash Freecad immediately (like the more advanced such as rectangle or slot).
3. Add any constraint. The hidden elements will now appear.
4. Use the "Undo" action (cmd+z or the Undo menu item). Freecad will crash when removing one of these hidden (or previously hidden) elements.
Additional InformationThese are the about-dumps for my Freecad versions. They were downloaded today:
OS: Mac OS X
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.16.6706 (Git)
Build type: Release
Branch: tag: 0.16.6706
Hash: f86a4e411ff7848dea98d7242f43b7774bee8fa0
Python version: 2.7.11
Qt version: 4.8.7
Coin version: 3.1.3
OCC version: 6.8.0.oce-0.17

OS: Mac OS X
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.17.8471 (Git)
Build type: Release
Branch: (detached from f944ab3)
Hash: f944ab3846a52e8f19bb2d4f6ec66e392669cdf5
Python version: 2.7.12
Qt version: 4.8.7
Coin version: 3.1.3
OCC version: 7.0.0


related to 0002650 closed Lines random scale 


2016-09-26 16:48SternaNew Issue
2016-09-26 16:48SternaFile Added:


2016-09-26 16:48

reporter (7,920 bytes)


2017-01-15 15:17

manager   ~0007796

Forum thread:
2017-01-15 15:17Kunda1Tag Attached: undo
2017-02-20 22:05Kunda1Target Version => 0.17
2017-02-21 15:40kkremitzkiProjectFreeCAD => Sketcher
2017-03-20 22:00Kunda1Relationship addedrelated to 0002650


2017-03-20 22:02

manager   ~0008669

Linked 0002650 even though not sure they are related beside the undo issue. The OP of 0002650 is unresponsive and didn't post a sample file. So I'm linking for recognition JIC it has something to do with this ticket.


2017-04-28 20:38

manager   ~0008817

Not reproducible by @abdullah in
Perhaps this is an OSX issue?

Issue History

Date Modified Username Field Change
2016-09-26 16:48 Sterna New Issue
2016-09-26 16:48 Sterna File Added:
2017-01-15 15:17 Kunda1 Note Added: 0007796
2017-01-15 15:17 Kunda1 Tag Attached: undo
2017-02-20 22:05 Kunda1 Target Version => 0.17
2017-02-21 15:40 kkremitzki Project FreeCAD => Sketcher
2017-03-20 22:00 Kunda1 Relationship added related to 0002650
2017-03-20 22:02 Kunda1 Note Added: 0008669
2017-04-28 20:38 Kunda1 Note Added: 0008817