TIFF file(s) causing DROID to hang

[Dclipsham]

The attached TIFF file causes DROID to hang - basically a scan never completes. This isn't the only one - others from the same digitized batch have the same issue. (I've attached within a zip but scanning from within or without the zip has the same hang issue)

I can't see anything obviously broken within the file, but I'm getting no clue from DROID logs as to why it's problematic. It might well be some interesting TIFF subset format, but even if it is, that would typically still give me a result and I could look at improving PRONOM.
RGE0021-B23F26-0001-008.zip

Environment details:
DROID 6.8, Windows 10, Java 11 OpenJDK as supplied in the DROID binary

David