Note: This bug occured even during 5.3.1.07.
With the Kancolle Enchant Mod installed it's not possible to view the Profile tab in-game and gives a clear view of your port instead.
Upon reinstalling without the mod the Profile views as normal.
Tried installing the Kancolle Eugen Enchant instead and it works perfectly fine.
I know these mods are full-package and have bugs but just wanted to put this here to let people know this is an issue (at least with me).
Edit: Another thing I noticed is that it also prevents messages regarding achievements to display in port as well.