# Description In the current Master (10.99.0) zones are not reclaimed properly if an island removal has been fired on the same net on a higher priority zone. The following zone fill works fine: {width="200" height="176"} After cutting away a part of the High priority zone the low priority zone fails to reclaim area that the low priority zone has abandoned. {width="200" height="176"} [kicad_test_planes.kicad_pcb](/uploads/5c686e461b6d530ad12651b4af082433/kicad_test_planes.kicad_pcb) This is how 10.0.0 builds the same file: <span dir="">{width="209" height="194"}</span> # Steps to reproduce 1. Open the included kicad_pcb file 2. Fill All Zones (B) 3. Observe zone 3 not being filled 4. Delete the trace cutting zone 1 5. Fill All Zones (B) again 6. Observe the zone 3 reclaiming the area from zone 2 island removal. # 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 PCB Editor x86_64 on x86_64 Version: 10.99.0-unknown, release build Libraries: wxWidgets 3.2.8 GLX FreeType 2.13.3 HarfBuzz 10.2.0 FontConfig 2.15.0 libcurl/8.14.1 OpenSSL/3.5.3 zlib/1.3.1 brotli/1.1.0 zstd/1.5.7 libidn2/2.3.8 libpsl/0.21.2 libssh2/1.11.1 nghttp2/1.64.0 librtmp/2.3 OpenLDAP/2.6.10 Platform: Ubuntu 25.10, 64 bit, Little endian, wxGTK, X11, wayland, ubuntu:GNOME, ubuntu OpenGL: NVIDIA Corporation, NVIDIA GeForce RTX 3060/PCIe/SSE2, 4.6.0 NVIDIA 580.126.09, GLX 1.4 Build Info: Date: Apr 14 2026 20:59:38 wxWidgets: 3.2.8 (wchar_t,wx containers) GTK+ 3.24 Boost: 1.88.0 OCC: 7.8.1 Curl: 8.14.1 ngspice: 44.2 Compiler: Clang 20.1.8 with C++ ABI 1002 KICAD_IPC_API=ON KICAD_USE_PCH=OFF Locale: Lang: en_US Enc: UTF-8 Num: 1,234.5 Encoded кΩ丈: D0BACEA9E4B888 (sys), D0BACEA9E4B888 (utf8) ```