After I placed my shulker box in a ravine, I opened it and edited the items, then I exited the ravine and closed Minecraft on my Switch. Then, when I logged on again, it was not in my inventory. I checked the ravine, but it wasn't there either. I lost several important items, and I would appreciate it if you could fix this as fast as possible. A similar glitch occurred when I removed several items from a placed shulker box, logged off, and they were neither in my inventory nor in the placed shulker box.
Quick question to help replicate this issue. Did you put in un-stackable items into your Shulker Box? Also to help out with reporting this bug. Are you on an original Switch? Like a launch model? Or Lite, OLED, or HAC-002 and onwards. Or a Switch 2? Let me know and I’ll try to replicate this issue to help Mojang find the root cause of this.