Missing rows in node_access table when anonymous role ticked causes access_denied for roles with other access control modules

I have 2 content types A and B, I'm using tac_lite and content access for fine grained access control across my site.
What's happening is, anonymous + authenticated users are ticked to view all/own content of type A, but not of type B.
I have a vocabulary "Access control" from which I have tagged a piece of content from A (nid 1311) and B (nid 1310) with a term "Customer" (tid 138).
I have a role "Content creator" which is ticked to view all/own content for both A and B, and also has the administer nodes permission (or "Administer content"

When content type A has anonymous and authenticated users ticked in the content access screen, the node_access table looks like so:

nid | gid | realm | grant_view | grant_update | grant_delete
------+-----+--------------------+------------+--------------+--------------
1310 | 4 | content_access_rid | 1 | 0 | 0
1310 | 7 | content_access_rid | 1 | 0 | 0
1310 | 138 | tac_lite | 1 | 0 | 0
1311 | 138 | tac_lite | 1 | 0 | 0

When I untick the content access for anon + authenticated and rebuild permissions I get this:
nid | gid | realm | grant_view | grant_update | grant_delete
------+-----+--------------------+------------+--------------+--------------
1310 | 4 | content_access_rid | 1 | 0 | 0
1310 | 7 | content_access_rid | 1 | 0 | 0
1310 | 138 | tac_lite | 1 | 0 | 0
1311 | 4 | content_access_rid | 1 | 0 | 0
1311 | 7 | content_access_rid | 1 | 0 | 0
1311 | 138 | tac_lite | 1 | 0 | 0

In the first instance, my user with the role Content creator, and no access control terms is DENIED access to node 1311, but granted access to 1310. After unticking the anon + authenticated users for type A and rebuilding permissions I am successfully granted access to node 1311.

This definitely seems like a bug to me, I'm running Content Access 7.x-1.2-beta1. To get content access and tac lite working together I'm using hook_node_access_records_alter to drop the priority of normal node grants.