> You are correct that many valid issues/bugs have been closed without resolution.
> Our team simply does not have time to address all issues AND build Angular Material 2. (This is what we have consistently stated in our Forum posts).
> We welcome community leadership with Pull Requests. Often those PRs have side affects, their scope of changes is too large, and ultimately the risk is simply too great to merge.
> So we close/reject the PR... we do this to protect the existing user base. Pull Requests that have granular improvements and fixes are much easier to assess, test, and merge... and thus can be quickly merged.
> Pull Requests that are submitted referencing closed issues will then trigger us to reopen those issues; until the merge is complete.
> After Angular Material 2 has been released, we expect to continue to support and improve Angular Material 1 for many quarters.
> Both versions are important. Both are need to support the Angular 1 and Angular 2 developers
For me it's clear while the work on Material 1.x is not prioritized, it's not officially deprecated and PRs are still welcome if they are reasonable in size and impact.