Spark Additional jars: Does spark.jars override spark.jars.packages?

Hey,

I got the following setup:

Spark 3.1.2 Standalone Cluster (1 Master, 2 Worker)

Zeppelin 0.10.1

SparkInterpreterSetting:

SPARK_HOME     /opt/spark (points to spark-3.1.2) 
spark.master   spark://my-spark-master-host:7077

spark.submit.deployMode  client
spark.jars.packages com.datastax.spark:spark-cassandra-connector_2.12:3.1.0,eu.europa.ec.joinup.sd-dss:dss-xades:5.9 

spark.jars.repositories  https://ec.europa.eu/cefdigital/artifact/content/repositories/esignaturedss/

I get the correct output, I I run a cell like below: Also cells which compute PI from spark examples work fine.

%spark
sc.version 

Using classes from additional packages provided via spark.jars.packages work fine:

%spark
import com.datastax.spark.connector._

val rdd = sc.cassandraTable("mykeyspace", "mytable")
println(rdd.take(5).toList) 

However, if I try to add a local jar via the spark.jars property as following

spark.jars file:///absolute/path/to/my/custom/jar

the jars provided via spark.jars.packages are not part of the SparkContext. The custom jar is located at the worker and zeppelin at the same path. If I run

%spark
sc.listJars().foreach(println) 

without spark.jars set, I get a long list like expected (stuff from datastax + eu repos). However, if I restart the interpreter and provide the spark.jars option, the cell from above only posts my custom jar. The logs output the following:

INFO [2022-03-04 15:51:17,742] ({FIFOScheduler-interpreter_1815846009-Worker-1} SparkScala212Interpreter.scala[open]:68) - UserJars: file:/opt/zeppelin/interpreter/spark/spark-interpreter-0.10.1.jar:file:/opt/path/to/my/jar, LONG_LIST_OF_JARS_FROM_MAVEN.

...

Added JAR file:///path/to/my/custom/jar at spark://x.x.x.:xxx/jars/my-custom.jar with timestamp xxx 

So it seems like the interpreter is aware of all of my jars, but only adds the ones from the spark.jars property, whereas I would expect all of the jars to be added. If I omit the spark.jars option, I get an entry ADDED JAR file:///... for each jar of the spark.jars.packages entry. 

In a previous Zeppelin version (0.8.1), I was able to configure all of this via the SPARK_SUBMIT_OPTIONS environment variable like 

SPARK_SUBMIT_OPTIONS=" ... --jars /abs/path/to/custom --packages cassandraconn,etc.. --repositories additional-repo

Is this a bug or am I converting these options in a wrong way?

Thank you!