Vulkan examples don't work with MoltenVK

$ ./hellovulkancubes 
[mvk-info] MoltenVK version 1.0.35. Vulkan version 1.0.106.
	The following 34 Vulkan extensions are supported:
		VK_KHR_16bit_storage v1
		VK_KHR_8bit_storage v1
		VK_KHR_bind_memory2 v1
		VK_KHR_dedicated_allocation v3
		VK_KHR_descriptor_update_template v1
		VK_KHR_get_memory_requirements2 v1
		VK_KHR_get_physical_device_properties2 v1
		VK_KHR_get_surface_capabilities2 v1
		VK_KHR_image_format_list v1
		VK_KHR_maintenance1 v2
		VK_KHR_maintenance2 v1
		VK_KHR_maintenance3 v1
		VK_KHR_push_descriptor v2
		VK_KHR_relaxed_block_layout v1
		VK_KHR_sampler_mirror_clamp_to_edge v1
		VK_KHR_shader_draw_parameters v1
		VK_KHR_shader_float16_int8 v1
		VK_KHR_storage_buffer_storage_class v1
		VK_KHR_surface v25
		VK_KHR_swapchain v70
		VK_KHR_swapchain_mutable_format v1
		VK_KHR_variable_pointers v1
		VK_EXT_debug_marker v4
		VK_EXT_debug_report v9
		VK_EXT_host_query_reset v1
		VK_EXT_memory_budget v1
		VK_EXT_shader_viewport_index_layer v1
		VK_EXT_vertex_attribute_divisor v3
		VK_EXTX_portability_subset v1
		VK_MVK_macos_surface v2
		VK_MVK_moltenvk v20
		VK_AMD_gpu_shader_half_float v1
		VK_AMD_negative_viewport_height v1
		VK_NV_glsl_shader v1
[mvk-info] GPU device:
		model: AMD Radeon Pro 560X
		type: Discrete
		vendorID: 0x1002
		deviceID: 0x67ef
		pipelineCacheUUID: 00002733-0000-2715-C125-BBD2482815F2
	supports Metal Shading Language version 2.1 and the following Metal Feature Sets:
		macOS GPU Family 2 v1
		macOS GPU Family 1 v4
		macOS GPU Family 1 v3
		macOS GPU Family 1 v2
		macOS GPU Family 1 v1
		macOS Read-Write Texture Tier 2
[mvk-info] GPU device:
		model: Intel(R) UHD Graphics 630
		type: Integrated
		vendorID: 0x8086
		deviceID: 0x3e9b
		pipelineCacheUUID: 00002733-0000-2715-C125-BBD2482815F2
	supports Metal Shading Language version 2.1 and the following Metal Feature Sets:
		macOS GPU Family 2 v1
		macOS GPU Family 1 v4
		macOS GPU Family 1 v3
		macOS GPU Family 1 v2
		macOS GPU Family 1 v1
[mvk-info] Created VkInstance with the following 2 Vulkan extensions enabled:
		VK_KHR_surface v25
		VK_EXT_debug_report v9
Failed to find vkCreateMacOSSurfaceMVK
QVulkanWindow: Failed to retrieve Vulkan surface for window
Failed to find vkCreateMacOSSurfaceMVK
QVulkanWindow: Failed to retrieve Vulkan surface for window