Why are items thrown out of the inventory?

I'm playing Minecraft (Switch) right now and I have a really funny problem. My Iventar throws out all the items in turn. I collect them again, then in the field of the item a green bar goes down and hey, the item is thrown away again. And funny way, only if I go. I stay after collecting again, nothing happens. But as soon as I take a step, talk and get away. I find that somehow amusing, had to laugh directly, but it's a bit impractical.

What is going on and what can I do that my things stay with me again?

Maybe you have inadvertently changed something in the control settings. Have no switch but is my plausible answer. If it's a bug I'm sorry.

Minecraft take out, restart switch and then it should work, worked for me

I did that. The first time it did not work. Only after the third time. No idea what it's been, at least that's it now.

No idea if it was due to the controller or if it's a bug. After I restarted it a few times I went again. Now I can play reasonably again.