The sha2_128f and sha2_128s shall be exchanged. https://github.com/bcgit/bc-java/blob/d7ffa8b6a25d8c698f4a45a06fe87e32e30088a5/prov/src/main/java/org/bouncycastle/pqc/jcajce/spec/SPHINCSPlusParameterSpec.java#L24-L25
The sha2_128f and sha2_128s shall be exchanged.
bc-java/prov/src/main/java/org/bouncycastle/pqc/jcajce/spec/SPHINCSPlusParameterSpec.java
Lines 24 to 25 in d7ffa8b