After choosing legendary smith perk, I still have +1 icon in smithing meaning that I have one unchosen perk. Later at some point when I have my smithing at 275-300, the legendary smithing perk icon disappears and the siege expert starts to appear instead. After I choose this perk, the +1 icon disappears.
Here is the screenshot of my smithing with siege expert selected (while it wasn't there in the beginning). The version is Beta 1.4.3
Here is the screenshot of my smithing with siege expert selected (while it wasn't there in the beginning). The version is Beta 1.4.3