Currently, when navigating the category tree, if an user navigates to "Field (SKU)" and then "Values" for a specification and then goes back to the category tree view via clicking the breadcrumb link:

And then navigates back to the same speficiation form, the previously listed specification values will not be listed anylonger.

Simulation

1 - In the category tree, go to any category with registered groups and fields, then right click it and access the option "Fields (SKU)"

2 - In the list of SKU fields, look for a specification field that has specification values for it.

3 - Click the "Values" option and they will be listed

4 - Then, in the breadcrumb, click in the "Categories" link

5 - Repeat steps 1 to 3, the same fields will not be shown again, as if they were not present in the catalog.

Workaround

Manage specification values via API or spreadsheet

And/or

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