in Neo4j my Cypher query pulls data from most recently loaded object, not the one specified

Question

I believe this code demonstrates a bug in this software. But given my lack of experience with Neo4j, maybe something is coded incorrectly.

I would like to know if the unexpected output is due to a bug.

Given 2 tiny .csv files, I load these data and when I query each loaded object the data seems ok.

Then when I query object T7 it shows the data from object T8.

Thanks!

Steps to reproduce the behaviour

File t7.csv

col1
t7 1 row

File t8.csv

col1
t8 2 rows
t8 2 rows

I then login with the following command:

$ bin/cypher-shell -u neo4j -p my password

I then run the following commands:

MATCH (T7)
OPTIONAL MATCH (T7)-[r]-()
WITH T7,r LIMIT 5000
DELETE T7,r
RETURN count(T7) as deletedNodesCount;

USING PERIODIC COMMIT
LOAD CSV WITH HEADERS FROM "file:///t7.csv" as line
CREATE (T7 {col1:line.col1});

MATCH T7 = (t7)
RETURN t7.col1;

The above commands load the data and return the values found as follows:

+------------+
| a.col1     |
+------------+
| "t7 1 row" |
+------------+

I perform the same task for the T8 data:

MATCH (T8)
OPTIONAL MATCH (T8)-[r]-()
WITH T8,r LIMIT 5000
DELETE T8,r
RETURN count(T8) as deletedNodesCount;

LOAD CSV WITH HEADERS FROM "file:///t8.csv" as line
CREATE (T8 {col1:line.col1});

MATCH T8 = (t8)
RETURN t8.col1;

The above commands load the data and return the values found as follows:

+-------------+
| a.col1      |
+-------------+
| "t8 2 rows" |
| "t8 2 rows" |
+-------------+

Now if I run the following command, this gets data for most recent query, but not the correct node?

MATCH T7 = (t7)
RETURN t7.col1;

I expected this output:

+------------+
| a.col1     |
+------------+
| "t7 1 row" |
+------------+

Instead I received the following output:

+-------------+
| a.col1      |
+-------------+
| "t8 2 rows" |
| "t8 2 rows" |
+-------------+

Version information

Neo4j

call dbms.components() yield name, versions, edition unwind versions as version return name, version, edition;

+----------------------------------------+
| name           | version | edition     |
+----------------------------------------+
| "Neo4j Kernel" | "3.5.1" | "community" |
+----------------------------------------+

OS

Mac OS 10.13.6