AlignUp SizeInBytes for buffer memory

[kruseborn]

https://github.com/GPUOpen-LibrariesAndSDKs/D3D12MemoryAllocator/blob/7597f717c7b32b74d263009ecc15985b517585c7/src/D3D12MemAlloc.cpp#L8023

If you are using the same heap for buffers and textures, it would be possible for a "small" texture with 4kb alignment to be placed in that memory space after the buffer, if the size is not aligned up. Is there any other reason you align up the size when you allocate memory for a buffer?

Or is the intention to always use separate heaps for buffers and textures?