Creative mode
I discovered that one when I drop some items from my hotbar to the trash to clean it. And I saw some rail speed controller wandering in space while I hadn't touched them during this session.
I understood then when I open my inventory in creative and attempted to split an item in itThe inventory menu system doesn't catch mouse clicks properly for the right click split dialog.
{F7733}Tooltip appears as if the mouse was behind the split menu
If you click on the red zone nothing happen, but if you click on the green one with the **right click**...- {F7867}
{F7735}You can right click through the split dialog, this will create a new dialog menu above your own (on the exact same position, you have to move it yourself to notice it)
...it'll open the split menu of the item in the background (in the inventory menu) behind the actual split menu.
{F7737}
All that part above was reproducible. But not the following one which occures right after :
I had of course close the split menu of the speed controller. And then click on **cancel** in the split menu of the **teal light** but this happened...
{F7739}
Each time I click on **Cancel** a new split menu of the same item popped-up, I could made them pop-up infinitely (I made 5~10 times) until I click on the **red cross** and closed the window but then guess what...
{F7741}
Rail enhancer blocks decide to leak from invetory anyhow (mostly when I moved the bugged split window from above the invetory to outside)- {F7869}
Logs: {F7743}, {F7745}, {F7744}, {F7746}, {F7747}
See also:Similar issue in T734 and T103702