Hey @mhamstra,
I was looking for (and successfully found) a workaround for this issue: Uncached Snippet Calls in Fields not working correctly with properties - I call a chunk without any properties in the cb template and in this chunk, I am calling an uncached snippet, in which I retrieve all the settings and content of the cb field i wanted to display.
Regarding field idx: I just tested it again and the output of [[+field_idx]] in a field template is empty (using the current cb version). I had a look at contentblocks.class.php and there is no indication that a field_idx placeholder exists.
I need the position of a field in a resource to retrieve the field’s settings/content in a snippet. The cbGetFieldContent Snippet is using the field id, which could be problematic in cases where I use a field multiple times in a resource.
[[+Unique_idx]] is something similiar, but since its increasing with each layout as well, it is not whats needed here.