Rohingyas are living in Myanmar prior to 1947 so they are Myanmar citizen by default and they were citizen till 1981 when bamar savage army stripped their citizenship. When they tried to carry out ethnic cleaning in 1970s Bangladesh's military government intervened and the savage agreed on paper writing that Rohingya are citizen of Myanmar in 1978.
Please go and educate yourself. Just for info Rohingyas are living there as early as 9th century and major migration happened in 1430 war when Bengal army kicked the bamar's *** to kick them out of Arakan. Then Arakan king took muslim name and used to invite Bengalis and mughals in their court. So population kept on increasing. It kept on going like this. They are mix of Bengali and Rakhine and made their new identity after living their for century.
Please come out of your fake Nepali identity. There is no shame of admitting that you are a shanghi.