Guild Wars 2

My hammer’s Symbol of Protection is not affected by the trait Writ of Persistence (Symbols last longer). It’s still 2 secs.

I noticed the same problem. The trait works fine with the mace or greatsword for example, but not with the hammer.

In addition: word of advice: you should pick a more clearly defined topic name next time.
I would suggest something along the line “Writ of Persistance not working with Symbol of Protection” or if that registers as to long switch the symbol for hammer.