Skin resets when game started offline

I set myself the earth skin(I got it after signing up for the mc earth beta few years back)and while I can use it and set it, after I close the game and then open it again while offline(to play singleplayer)the skin is reset to steve/alex. This is annoying, especially since it also happens to paid skin packs I believe. I also cannnot change the skin back since it does not show under owned skin packs. The only thing I can do is close the game, connect to the internet, relaunch it and now the skin will show up in owned where I can set it again. Especially annoying on nintendo and mobile!