So, my death wizard had three ninja figs, a silver trumpet vine, and a king parsley, all of them near elder stage. I checked on them and I figured it would take another day for all of them to become elder. All of a sudden, all of my plants briefly disappeared and then they reappeared. When they reappeared, I noticed a ninja fig was elder. I thought, 'What is happening'? I exited the game, got back on, went into my house, and saw my silver trumpet vine was now elder. Do you know why these glitches are happening?