Add warnings to changelog

docs/changelog.rst

@@ -5,6 +5,11 @@ CHANGELOG
 2.110.0+dev     (XXXX-XX-XX)
 ----------------------------
 
+**Warnings**
+
+- When adding a via-point to a linear object's topology, it is now required to drop the new marker onto a path before the updated route is displayed, as the preview is no longer available when dragging the marker. This is due to the route computation now being performed on the backend. For more information, see https://github.com/GeotrekCE/Geotrek-admin/issues/4286
+- After adding new paths, pre-existing topologies can follow routes that are no longer the shortest. When editing topology-based linear objects through the interface, their route will no longer be automatically recomputed to the shortest option, which was unwanted behavior. This means you might now encounter topologies that take a detour despite not using a via-point marker. Be careful when editing such a route, as moving or adding neighboring markers will remove the detour. Note: this does not address the topology ordering issue when adding new paths. For more information, see https://github.com/GeotrekCE/Geotrek-admin/issues/4286
+
 **Improvements**
 
 - Remove overriding of SchemaRandonneeParser's filetype_name attribute (#4022)