Cannot solve a linear system

[WhiteBlackGoose]

The version I use: AngouriMath prerelease

Unexpected behaviour or bug: Cannot solve

2 * x_1 * (-66) - 6 * x_2 + 24 * x_3 - 12 * x_4 + 270 = 0
-6 * x_1 - 2 * x_2 * 74 - 8 * x_3 + 4 * x_4 - 440 = 0
24 * x_1 - 8 * x_2 - 2 * x_3 * 59 - 16 * x_4 - 190 = 0
-12 * x_1 + 4 * x_2 - 16 * x_3 - 2 * x_4 * 71 + 20 = 0

WA finds a root

[WhiteBlackGoose]

We need some check, if it's a system of linear equations with no parameters, we can solve it using matrix