diff --git a/.lsan.supp b/.lsan.supp
index 6ef6ca8fff..0171b8c180 100644
--- a/.lsan.supp
+++ b/.lsan.supp
@@ -18,6 +18,9 @@ leak:TKernel
 # TBB
 leak:libtbb
 
+# OSMesa
+leak:libOSMesa
+
 # Potential mesa/VTK leak with incomplete callstack
 # forces us to hide all leaks from the tests using a render window
 # https://gitlab.kitware.com/vtk/vtk/-/issues/18504
diff --git a/application/testing/CMakeLists.txt b/application/testing/CMakeLists.txt
index 46d1478547..3561301450 100644
--- a/application/testing/CMakeLists.txt
+++ b/application/testing/CMakeLists.txt
@@ -1003,8 +1003,9 @@ if(F3D_PLUGIN_BUILD_ALEMBIC AND F3D_PLUGIN_BUILD_ASSIMP)
 endif()
 
 # Test rendering backends
+# For some reason the sanitizer detects leaks because of EGL and OSMesa
 f3d_test(NAME TestRenderingBackendAuto DATA cow.vtp RENDERING_BACKEND auto)
-if(UNIX AND NOT APPLE AND VTK_VERSION VERSION_GREATER_EQUAL 9.3.20240914)
+if(UNIX AND NOT APPLE AND VTK_VERSION VERSION_GREATER_EQUAL 9.3.20240914 AND F3D_SANITIZER STREQUAL "none")
   f3d_test(NAME TestRenderingBackendEGL DATA cow.vtp RENDERING_BACKEND egl)
   f3d_test(NAME TestRenderingBackendEGLCheckClass DATA cow.vtp RENDERING_BACKEND egl ARGS --verbose REGEXP "vtkEGLRenderWindow" NO_BASELINE)
   f3d_test(NAME TestRenderingBackendOSMesa DATA cow.vtp RENDERING_BACKEND osmesa)