Cache Tag invalidation not working for lists in custom blocks

This sounds what is described in https://git.drupalcode.org/project/pantheon_advanced_page_cache#changing.... Have you tried that?

I agree with @richardbporter on this.

Try

terminus drush [MACHINE-NAME-OF-SITE].[ENV-NAME] -- config:set pantheon_advanced_page_cache.settings --input-format=yaml   "override_list_tags" "false"

and hopefully it will start working as expected.

We ended up rebuilding the relevant piece. It looks like this was a weird collision between the APC and views_field_formatter, since clearing the specific view cache tag worked. We switched to the EVA module and rebuilt, and it corrected the issue. Safe to close for now.

Thanks for the update. Closing issue.