On iPhone drag-n-drop doesn't work. Long tap basically selects part of the gaming field and this selection is not draggable. Once tap is released it shows the Copy/... menu.
The black boxes are data; they are automatically picked up. You're swiping to move the cursor that places the data. The "write file" button writes the data.
I’m not sure what else someone would interpret as drag and drop on a touch screen. That’s gonna be swiping.
works for me with iPhone13 + Safari
I got other things I’m supposed to be doing right now so I’m gonna go do those.