The version 1.0.39 can't decomplie normaly

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Hello:
I'm using wabt-1.0.39 to solve the "Some Assembly Required 2" challenge in PicoCTF.

However, when I tried to decompile the wasm file using wasm-decompile.exe, I found that the encrypted string before and after compilation was the same.

This prevented me from continuing with the challenge, which is different from the process described in other tutorials.

So, I tried using version 1.0.30, and I was able to continue decompiling the encrypted string.

Is there a bug in version 1.0.39?