Some data in update patch can not be decrypted

[arbalest876]

When I try to extrating data from update 1.0.5 of Taiko no Tatsujin,I find some data could not be decrypted.

For example(I have already used --onlyupdated to gnore non-updated files in update partitions),
From 1.0.1-1.0.4,I can use gzip to unzip the file 'Data/NX/datatable/wordlist.bin' (this file is updated in every patch)after I extracted the update patch with baseromfs_raw/basenca.
But in 1.0.5,I can't unzip it(The header of the file is not 1F 8B 08).It looks like be encrypted.
In the same time,the file 'Data/NX/datatable/shougou.bin' is all right.I can unzip it in both 1.0.4 and 1.0.5(it is different in 1.0.4 and 1.0.5).

I don't know whether it's a bug of hactool or just the format of wordlist.bin is changed in 1.0.5.

The NCAID of update 1.0.5 is bd352fb419fb6ce22a670b1d1bacaed1
The NCAID of basegame is 1adf729f7da40d33b068997adbac355c