NSF2 export with corrupted NSFe chunk ident?

[Gumball2415]

occasionally, an NSFe chunk identifier gets corrupted? further investigation is needed.

build: 8284caf x64 release
module: triangle drums.zip

[TakuikaNinja]

I think this might be related to a crash I get in nsfpresenter-rs when trying to open NSF2 exports from 0.5.1.1? I looked at the NSF2 export in a hex editor and found a chunk with the contents "00 00 00 00 40 BE 7E FE" before the "mixe" chunk. It doesn't appear in exports from previous versions, so I removed it - nsfpresenter-rs accepts the file after that.

Here's a diff view of a newly made export from one of my own modules (on the left) compared to an older version (on the right):

[TakuikaNinja]

Also, the oldest version number listed in the "bad" NSF2 exports I have is 0.5.0.3.