While performing mysql replication i am observing below issue:

Pre requistes : I have three mysql databases all located on different machines. Lets suppose we have db1,db2,db3 and each of them have one table languages db1 is the master of db2 db2 is the slave of db1 and master of db3 db3 is the slave of db2

Scenario 1 while inserting something in language table of db1 changes are reflected to db2 in language tables but it doesnot propagate to db3 language table.

Expectation - since db3 is the slave of db2 then above change should reflect in db3 as well but its not happening

Scenario 2 but while inserting something in language table of db2 changes are reflected in language table of db3 perfectly.

I dont know whats the gap while inserting into db1

Please suggest if any configuration needs to be done