[External] [WIC] Block metadata copy doesn't work when encoding an HEIC file and pixel data is re-encoded

[benstevens48]

If I use WIC to modify an HEIC file then save it again, all metadata is lost if I have used the block metadata writer initialized from the block metadata reader (the standard way to do this). The issue only occurs if the pixel data is re-encoded, otherwise it works OK. I have attached a sample project and an HEIC file (clock.zip, requires extracting first) you can use to test it. After exporting, inspect the file in File Explorer and observe all properties such as rating are lost.

HeicMetadataTest.zip
clock.zip