We have a site that my team have done site wide meta description updates (the originals looked almost like random text.) Despite a months` elapsed time, google continues to show the bad decs on all searches *unless* we look at the updated pages with a "site:domain.com search" - which presumably takes Google`s "improvements" out of the equation.
They`re written for humans. The length and relevance of the descriptions are spot on and it is not keyword stuffed or otherwise offensive to Google guidelines. They are highly relevant to the pages and the test queries.
What other tests could we do to isolate cause and repair this?