Can't edit product attribute slugs

Hi there,
In multisite I am having trouble Quick editing product attributes + having problem with wrong product attributes slugs on the sub site.

1) I cannot quick edit the product attributes. The page just "jumps" and doesn't open the quick edit option.

2) On main site I have this size attribute: 62/3 months with slug 62-3-months. As a sub to this attribute I have 68/4 months with slug 68-4-months.

However on sub site the slug for 68/4 months turn into 68-4-months-62-3-months e.g. adding the parent slug.

this is causing a lot of problems in regards to the products and all in all just shouldn't happen.

What is wrong?