Thanks for the detailed reply, vadi92!
Following your advice, I did some more tests with other characters than the main one. The results for me, however, didn't change.
I now have tested both the windows 64 and 32 versions of the game in both native windows and emulation on linux as well as as smoe more tries on the native linux version. In all cases the button to change to the tattoo mode didn't appear for me, leaving me totally baffled.
And before someone asks, I tested against the save of my current linux playthrough as well as completely new saves. Granted for the latter I had to edit the save files, since I don't have the time for another full on playthrough right now. So my negative results could be because something broke when I changed the relevant values.
So it would seem that, for whatever reason, I'm an odd one out with all my computers. The only hope I can have is that some other players will toss their hats into the ring and add their experiences to the discussion, shedding some more light on the whole thing.
For competitions sake here is my version:
The loyalty status of my servant:
and her inventory screen:
And last but not least, the upgrade panel:
I've finally discovered how the tattoo button disappears! This, however, leads to other bugs related to it.
But first things first. For me the tattoo button in the inventory disappears whenever I open the inventory via the Inventory button in the Mansion's main menu, and as soon as I used this button even once, the tattoo button never shows up again until I shut the game down and load it up fresh.
The tattoo button only appears for me, when I access the inventory screen through going to a character's info screen and from there go to the inventory. However, accessing the inventory through this method makes the button always appear, regardless of whether or not I have build the beauty parlor. It appears both on the master and any servant, even if she/he has not trained the body modification loyalty upgrade. And using one of my edited saves, I can confirm that even when none of the prerequisites are met, I can apply tattoo's as long as I have the inks.
Anyway, I hope my observations can help other players and perhaps even the developers. Cheers and happy gaming everyone!
