FNU when booking my flights.

I had to request a name correction when booking my flights with Etihad to Frankfurt via Abu Dhabi due to an issue with the name format. The airline's system listed my first name as "FNU" and my entire name, "Muhammad Abdul Rauf Bin Che Jalil," under the surname. When I contacted Etihad to verify this, they explained that, based on the MRZ code in Malaysian passports, we technically don’t have a first name. As a result, Etihad follows a standard procedure by inputting names this way.

I wasn’t familiar with this format, as Malaysia Airlines handles name bookings differently. To be honest, I'm feeling quite anxious. Will the staff at KLIA recognize this format? Will I still be allowed to board at the gate? I’d appreciate any insights or reassurances that could help ease my concerns.