Fixed: cache lastTid wasn't set when doing full verification

src/ZEO/ClientStorage.py

@@ -1388,6 +1388,14 @@ def verify_cache(self, server):
         for oid, tid in self._cache.contents():
             server.verify(oid, tid)
         server.endZeoVerify()
+
+        if server_tid > self._cache.getLastTid():
+            # We verified the cache, and got no new invalidations
+            # while doing so.  The records in the cache are valid,
+            # in that invalid current records were invalidated,
+            # but the last tid is wrong.  Let's fix it:
+            self._cache.setLastTid(server_tid)
+
         return "full verification"
 
     def invalidateVerify(self, oid):