Why did some code disappear?

#1

I downloaded mblock 5 and used the downloaded version. I had a script as shown below in a sprite.
code1
However, I went to the device library and when I came back to the sprite library, the code changed.
The picture below shows the new code.
code2
Note that the ‘When d key released’ block is under the ‘When space key released’ script, which is why the ‘When d key released’ block seems to be connected to the ‘When space key released’ script.

#2

Hi, I have tried what you said, but it is no difference after I come back to the sprite library…how about start the mBlock 5 again to try this function?