Guild Wars 2

Master of terror is supposed to increase fear duration by 50%, however, if I don’t slot any additional condition duration via rune or the spite trait line, the base fear duration (Doom and Reaper’s Mark) of 1 second becomes 1,25seconds which is especially annoying since you will miss the 2. tick of terror.
Is it bugged or am I missing something?

I think it doesnt show in the tool tip.