aXes does not like IBM i break messages - because they are pushed by the server – something that a pull based technology like the web browser cannot accommodate.
It is strongly recommended that you don't use break message in aXes 5250 sessions - especially in RAMP-TS and aXes-Mobile applications.
Using these IBM i CL commands in a user's IBM i logon program will generally stop all break messages:
CHGJOB BRKMSG(*HOLD) STSMSG(*NONE) MONMSG MSGID(CPF0000 MCH0000) CHGMSGQ MSGQ(*WRKSTN) DLVRY(*HOLD) MONMSG MSGID(CPF0000 MCH0000)
CHGMSGQ MSGQ(*USRPRF) DLVRY(*HOLD) MONMSG MSGID(CPF0000 MCH0000)