The third corrupted nexus (tier 3) that i need to do for just 2 atlas points, is 2 screens away!

The third corrupted nexus (tier 3) that i need to do for just 2 atlas points,
is 2 screens away!

Am i expected to fight 20 maps till i get there?
Is this expected or a bug?
Because if this is expected, i have better things to do with my time than this shit.