Why are the projection and view matrix of the shadowmap changing in URP?

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Atcom.unity.render-pipelines.universal@14.0.8\Runtime\ShadowUtils.cs, I was just checking the view and projection matrix of the shadowmap in the ExtractDirectionalLightMatrix method. There is only one directional light in my scene, but the third column in matrix of the view matrix of the shadow cascade is always changing in the above method (even there is no change in the scene). As far as I know the third column should be the position of the light source. But the position of the light source is fixed.

As you can see the third colum is changing in every iteration, but there is a cycle, so a values are repeated.

shadowSliceData.viewMatrix = "-0.50000\t0.00000\t0.86603\t13.42015\n-0.49673\t0.81915\t-0.28679\t-58.15395\n0.70941\t0.57358\t0.40958\t61.39879\n0.00000\t0.00000\t0.00000\t1.00000\n"
shadowSliceData.viewMatrix = "-0.50000\t0.00000\t0.86603\t27.64966\n-0.49673\t0.81915\t-0.28679\t-20.50505\n0.70941\t0.57358\t0.40958\t0.77490\n0.00000\t0.00000\t0.00000\t1.00000\n"
shadowSliceData.viewMatrix = "-0.50000\t0.00000\t0.86603\t55.44674\n-0.49673\t0.81915\t-0.28679\t52.78264\n0.70941\t0.57358\t0.40958\t-117.46690\n0.00000\t0.00000\t0.00000\t1.00000\n"
shadowSliceData.viewMatrix = "-0.50000\t0.00000\t0.86603\t9.60869\n-0.49673\t0.81915\t-0.28679\t-68.22847\n0.70941\t0.57358\t0.40958\t77.60756\n0.00000\t0.00000\t0.00000\t1.00000\n"
shadowSliceData.viewMatrix = "-0.50000\t0.00000\t0.86603\t13.42015\n-0.49673\t0.81915\t-0.28679\t-58.15395\n0.70941\t0.57358\t0.40958\t61.39879\n0.00000\t0.00000\t0.00000\t1.00000\n"
shadowSliceData.viewMatrix = "-0.50000\t0.00000\t0.86603\t27.64966\n-0.49673\t0.81915\t-0.28679\t-20.50505\n0.70941\t0.57358\t0.40958\t0.77490\n0.00000\t0.00000\t0.00000\t1.00000\n"
shadowSliceData.viewMatrix = "-0.50000\t0.00000\t0.86603\t55.44674\n-0.49673\t0.81915\t-0.28679\t52.78264\n0.70941\t0.57358\t0.40958\t-117.46690\n0.00000\t0.00000\t0.00000\t1.00000\n"
shadowSliceData.viewMatrix = "-0.50000\t0.00000\t0.86603\t9.60869\n-0.49673\t0.81915\t-0.28679\t-68.22847\n0.70941\t0.57358\t0.40958\t77.60756\n0.00000\t0.00000\t0.00000\t1.00000\n"

Then what could be changing in the matrix?

As for the projection matrix, the third row is changing.

Any help is appreciated!