unexpected result from long statements on Multiple Lines

[Lokinyx]

x = [1.2300...
4.5600]

x =

1.2300
4.5600

y = [1.2300 ...
4.5600]

Error:
Expecting a matrix definition followed by a right bracket

[Nelson-numerical-software]

expected results:

>> x = [1.2300...
4.5600]

x =

    1.2300    4.5600

>> x = [1.2300 ...
4.5600]

x =

    1.2300    4.5600