Using a specialization constant as a size of an array placed inside a buffer results in a runtime error

The following is working:

layout(binding=0)buffer _{mat4 b[52*3];V v[];};

The following compiles successfully but fails at runtime:

layout(constant_id=0)const uint n=52;
layout(binding=0)buffer _{mat4 b[n*3];V v[];};

Error message:

VUID-VkPipelineShaderStageCreateInfo-pSpecializationInfo-06849(ERROR / SPEC):
msgNum: 1132206547 - Validation Error: [ VUID-VkPipelineShaderStageCreateInfo-pSpecializationInfo-06849 ] | MessageID = 0x437c19d3 |
vkCreateComputePipelines(): pCreateInfos[0].stage After specialization was applied, VkShaderModule 0x0[] produces a spirv-val error (stage VK_SHADER_STAGE_COMPUTE_BIT):
Structure id 16 decorated as Block for variable in StorageBuffer storage class must follow relaxed storage buffer layout rules: member 1 at offset 64 overlaps previous member ending at offset 2147493631
%_ = OpTypeStruct %_arr_mat4v4float_uint_2248147100 %_runtimearr_V
The Vulkan spec states: If a shader module identifier is not specified, the shader code used by the pipeline must be valid as described by the Khronos SPIR-V Specification after applying the specializations provided in pSpecializationInfo, if any, and then converting all specialization constants into fixed constants (https://vulkan.lunarg.com/doc/view/1.3.283.0/windows/1.3-extensions/vkspec.html#VUID-VkPipelineShaderStageCreateInfo-pSpecializationInfo-06849)
Objects: 0

I have read the specification:

Changing the specialized size will not re-layout the block.

Why not? Isn't spirv meant to replace the traditional method of generating and compiling glsl during runtime?

Start with the two GLSL buffer declarations and the reported Vulkan validation error after specialization. Read the cited Vulkan specification passage about specialized sizes not re-layouting the block, then determine whether the observed behavior is expected or whether the specification needs clarification. Done means resolving the question with an agreed explanation or specification change.