Weapon stuck at rank 30 instead of max rank

[Luconos]

So i got the paracesis from the last quest and i started to level it.

After a while it went to rank 30 but it didn't get the "max rank" tag like all other weapons did.

It also shows like this on my profile wich annoys me.

I tried giving it more xp but the progress bar doesn't move.

Anybody has the same problem?

 

[Kracken]

Paracesis acquire its max rank of 40 lvl after it get 5 forma (gain 2 on each forma)

[--C--LexTalionis]

Yeah, the way it works on first leveling, you go to rank 30. Then you can forma, and next time it stops at rank 32. Forma again, and level to 34. Repeat, 36, repeat, 38, and forma a final time and level to 40, at which point it will say "Max Rank".