Ok, so I'm on 9.2 sysNand with 10.3 emuNand using rxTools 3.0 Alpha.
I previously had rx 2.6, and I installed two or three japanese games on it, mainly FE: Fates and the Hyrule Warriors Demo, and they always worked just fine.
However, after updating my rxTools so I could coldboot directly into it, these cias and only those (I tried installing other non-japanese cias after them and they don't disappear) disappear if I enter the friends list app and close it.
I can still enter the game through devmenu or FBI, and sometimes if I turn the 3DS on and off the cias reappear again as wrapped gifts.
If I enter the game, press Home, go to friends list and exit it, the 3DS freezes and I'm forced to turn it off.
The same happens if I try to press Home if the icon isn't there by launching the game through FBI.
I searched a lot for an answer to this and didn't find anything. I previously had linked Nands, but I even unlinked them to see if this had anything to do with it but it still doesn't work either way. Is this a known issue? Or is it just the build I'm using?
One of my friends is using the same build and installed japanese games as well, and none of this happened to him.
i think those Jap titles might not have RF (RegionFree) on them and maybe thus they disappear?
i have 2.6 Rx and the jap cia games i have installed never disappeared for me, i believe they all have RF on them.
i doubt that it is the v3.0 causes the issue for you, i myself will update my 3ds to the latest sometime soon.