Pause and resume via Luban?

I wanted to pause a print because I can’t let it run over night. For this I pressed the “pause” button on the top left in Luban and turned the device off. After I turned it on again and connected to Luban, it looks a bit like the progress is not saved. I don’t want to risk that the head collides with the unfinished print. I also couldn’t find anything regarding this in the documentation.

Is that right? Is pausing a print not possible when power is turned off? Is it really rocket science to implement this?

Start the print from touchscreen.
Then you can pause the print on the small screen and shut the power off.
The recovery works but sometimes you can see small errors in the paused layer (depending on the size and geometry of the part).