src/hooks/roofcover/useAuxiliaryDrawing.js

@@ -887,7 +887,7 @@ export function useAuxiliaryDrawing(id, isUseEffect = true) {
           line.attributes = {
             ...line.attributes,
             roofId: roofBase.id,
-            actualSize: line.attributes?.actualSize ?? 0,
+            actualSize: line.attributes?.actualSize ?? line.getLength(),
             planeSize: line.getLength(),
           }
           line.isAuxiliaryFixed = true