Beta drivers: VK_EXT_host_image_copy

On a RTX 3080 (on driver 537.35), I tried to create images with the VK_IMAGE_USAGE_HOST_TRANSFER_BIT_EXT flag, which caused the memory requirement bit to be 4, which points to heap 2. Heap 2 is only ‘224395264’ in size which makes it not even able to store a single 4k r8g8b8a8 image (the image is around ~530 megabytes if I remember correctly). Is this expected behaviour, or is this a bug?