When you generate spaces by using the Generate all option, the spaces are generated but not according to the boundary objects visible in the drawing area. The same happens when you try to update some existing spaces.
Some boundary objects for these spaces might be on a frozen or hidden layer. In previous versions of the product, objects that were invisible due to a frozen or hidden layer were not included in associative spaces. Now, frozen or hidden objects are included in the space generation if they are set as boundary objects and are located in the current drawing area. To verify if this is the case, display all boundary objects in the drawing area. If you now see previously invisible objects, these objects are on a frozen or hidden layer. To exclude objects on a frozen or hidden layer from the boundary set, unfreeze or unhide the layer, and change the Bound Spaces property of the objects from Yes to No.