Bug (SRP)unexpected result rendering point light shadow with texture array

hi guys
my srp point light shadow is rendering correctly with GLcore and vulkan api, but when i switch to DX11 api, it is not rendering as expected/correctly







with DX 11 api, only the positive-X did write to RT, all other faces does have object rendering going on(looking at the frame debugger), but it does not got writen to the respective RT slice (i tested sampling different slice, confirm only 0(positiveX side) has something), or maybe i should say, all other RT slices have no shadow map result in it



my srp setup like :
using texture array set up for point light rendering, textureFormat use ShadowMap, and used samplerCompareState to do direct compare. and setRenderTarget 6 times from 0 - 5 cast as cubeMap face.

Code (CSharp):

1. cmdBuff.SetRenderTarget(_sId_TbRpOtherShadowMap, mipLevel: 0, cubemapFace: cubeMapFace, depthSlice: othersIndex);

since all my directionals, spots and points shadow are working correctly in GL, vulkan(editor), and even on mobile(tested gles3.0 and vulkan)

question :
is this unexpected result on DX11 api a bug ? or there is something i need do specifically for DX platform?