It’s a Burmese government/ethnic minorities issues. There’s two ‘major’ groups of Muslims in Burma- one’s the Rohingya, in the north, the other’s in the Ayawaraddy region (which is where I grew up).
And up in Arkan, there’s conflicts with other ethnic minorities too, who’re Buddhist and Christian and other religions but the issue isn’t their religion, it’s that the government doesn’t recognize them as Burmese and calls them illegal which is silly because they’ve been there a long, long time.
What’s interesting about the Rohingya in particular among all the ethnic groups is that yes, there certainly is a history of prejudice against Muslims, but really Islamophobia is pretty much everywhere. And since the Burmese government don’t recognize the Rohingya as Burmese- and ethnic minorities as well- they see the Rohingya as ‘taking over’ their land. Also silly. Again, the people have been living there. Not to mention that Aung San (Suu Kyi’s father) promised them a home, and they just never got what they were promised when Ne Win came to power and Ne Win really did hate the minorities. Which is where amyo barthar thartana comes in, and the movement against the Rohingya (and other ethnic minorities) became a matter of protecting amyo barthar thartana (race/nation). Nationalism, by the way, is a curse.
The history’s better explained here, and I strongly suggest you read it. I know it’s long. It’s totally worth it.
But the issue is a matter of land and nationality that got mixed in with religion. And it got mixed in with religion only because Burmese tend to only consider Buddhists as Burmese. But making the issue a “Buddhists hate Muslims” one is really inaccurate.