Many Palestinian refugees seem to be hostile to any government that doesn’t make revenge on Israel it’s top priority, Arab or not, and will generally launch attacks on Israel from any neighboring states they are allowed into. In fact, Hezbollah is attacking Israel from Lebanon right now.
Perhaps you’re not aware, but Palestinian refugees tried to assassinate the king and overthrow Jordan when they were let in and later participated in destabilizing Lebanon during its civil war. This was before Hamas existed but the radicalized factions that participated in this were the equivalent of the time.
Many Palestinian refugees seem to be hostile to any government that doesn’t make revenge on Israel it’s top priority, Arab or not, and will generally launch attacks on Israel from any neighboring states they are allowed into. In fact, Hezbollah is attacking Israel from Lebanon right now.