I did it right now, nothing changed
I added a test beacon, but it seems to work as expected:
beacons = TEST, N57.1190, E65.3805, 0, Test
So maybe there is still a typo in your file. Or the Nerug coordinates are incorrect. Could you post your the [airspace] section so I can have a look?
[airspace]
radius = 27
elevation = 378
floor = 2500
descentaltitude = 8000
ceiling = 10000
above = 12000
separation = 4
automatic = false
strictspawn = true
name = radar, radar
decimaldegrees = true
center = 57.1683, 65.3161
magneticvar = 15
beacons =
NERUG, 57.4, 65.8, 0, NERUG
That works fine on the latest version of Endless ATC (v5.7). Nerug is inside the 27NM circle. If I remove decimaldegrees = true, then it looks like your screenshot. On earlier versions of the game, decimaldegrees does not work.
thank you