Can't change grid spacing in GIMP

[Alex]

Can't change grid spacing in GIMP without program restart.
Ubuntu 14.04 x86-64, gimp 2.8.10-0ubuntu1 (from official repo).

Steps to reproduce:
Go to "Edit" -> "Preferences" menu -> choose "Default Grid" -> change "Spacing" -> click "OK". If grid is not enabled, go to "View" -> "Show Grid" menu and check it to show grid. The grid spacing / cell size is equal to old settings, not to new after changes. Only if I close gimp and open again it apply new grid spacing and show grid with new cell size.

Expected:
When I change grid spacing in preferences and click "OK", Gimp should immediate apply changes and change grid to new cell size without program restart.

Grid Offset settings works same: can't apply without program restart.

[Michael Schumacher (schumaml)]

You have only changed the default settings that are applied to new (or newly opened) images. For images that are already opened in GIMP, you can change this via the Image menu's Configure Grid option. See http://docs.gimp.org/2.8/en/gimp-concepts-image-grid-and-guides.html#gimp-concepts-image-grid

[Jack Pyrne (0-jack-c)]

I tend to agree with the OP that this is unintuitive. I'd recommend a checkbox on the "Change Default Grid" box, marked "Update current image?" or something along those lines.

[Niko Pasanen (niko-p)]

I also think that the current behavior is somewhat unintuitive, and it would be handy to have possibility of changing the grid size of the current image also through "Edit -> Preferences".

[Peter (peisoz)]

Image > Grid settings