Unable to receive message on pulsar topic in case of delete on table having composite primary key

[rakulkar-tibco]

I am using Cassandra 4 and cdc-apache-cassandra 2.2.3.

Consider below table.

cqlsh:ks1> DESC foo_comp ;

CREATE TABLE ks1.foo_comp (
    a int,
    b text,
    c text,
    PRIMARY KEY (a, b)
) WITH CLUSTERING ORDER BY (b ASC)
    AND additional_write_policy = '99p'
    AND bloom_filter_fp_chance = 0.01
    AND caching = {'keys': 'ALL', 'rows_per_partition': 'NONE'}
    AND cdc = true
    AND comment = ''
    AND compaction = {'class': 'org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy', 'max_threshold': '32', 'min_threshold': '4'}
    AND compression = {'chunk_length_in_kb': '16', 'class': 'org.apache.cassandra.io.compress.LZ4Compressor'}
    AND crc_check_chance = 1.0
    AND default_time_to_live = 0
    AND extensions = {}
    AND gc_grace_seconds = 864000
    AND max_index_interval = 2048
    AND memtable_flush_period_in_ms = 0
    AND min_index_interval = 128
    AND read_repair = 'BLOCKING'
    AND speculative_retry = '99p';

With all correct configuration - I am able to receive insert/update events on pulsar data topic.

Now if we delete using following CQL statement :
delete from foo_comp where a=3 and b='B4'; - Able to receive delete event on pulsar data topic.

But if we delete using the following CQL statement :
delete from foo_comp where a=3;
Data gets deleted from the table but no event is received on the pulsar data topic.

And no events were received for any further insert/update operations.

To get it working again, we need to restart Cassandra and Pulsar clusters and reconfigure them.

Please suggest.