I'm not sure if something can be done about this, but it can lead to false negatives, which is highly undesirable. If it can't be fixed, please add warning to the docs that creepage DRC requires valid board edge to work properly. # Steps to reproduce 1. Open PCB from this project: [Malformed edge creepage test.zip](/uploads/1a715095f9bf2e1304284cae0068680f/Malformed_edge_creepage_test.zip) 2. Notice there is an extra line in Edge.Cuts which causes malfomed board edge. 3. Run DRC. Observe that no creepage violations are reported. 4. Delete the line. 5. Run DRC again. Observe that 3 creepage violations suddenly appear. {width=804 height=788} # KiCad Version <!--Copy version information (from main menu Help->About KiCad ->Copy Version Info) and paste it between the triple backticks below to preserve the formatting.--> ``` ``` ``` Application: KiCad x64 on x64 Version: 10.99.0-176-g1605470467, release build Libraries: wxWidgets 3.3.2 FreeType 2.13.3 HarfBuzz 12.3.0 FontConfig 2.17.1 Platform: Windows 10 (build 19045), 64-bit edition, 64 bit, Little endian, wxMSW OpenGL: ATI Technologies Inc., AMD Radeon RX 7900 XT, 4.6.0 Compatibility Profile Context 25.6.1.250522 wxWidgets: 3.3.2 (wchar_t,STL containers) Boost: 1.90.0 OCC: 7.9.2 Curl: 8.18.0 ngspice: 45.2 Compiler: Visual C++ 1944 without C++ ABI KICAD_IPC_API=ON KICAD_USE_PCH=OFF Locale: Lang: en_GB Enc: UTF-8 Num: 1,234.5 Encoded кΩ丈: D0BACEA9E4B888 (sys), D0BACEA9E4B888 (utf8) ```