Scratch-gui: Large amount of code completely invisible.

[GreenScripter]

Expected Behavior

_A large portion of a project's code shouldn't be invisible._

Actual Behavior

_Most of the code in one sprite is completely invisible._

Steps to Reproduce

_ I noticed this when looking at the code of my project https://scratch.mit.edu/projects/222588971/ in the 3.0 editor. It runs as if the hidden code is still there, though if you duplicate the script with the hidden code then delete the original it is gone. I think several custom blocks are missing as well. The hidden code is saved in the sb3 file._

Operating System and Browser

_Mac OS 10.14 Chrome 70.0.3538.77_

[Mr-Dave2]

Your project uses hacked blocks. I found these: and

I did a little testing and I believe that it is the hacked block "" that is causing the vanished stacks problem.

[GreenScripter]

It appears that is the case, after removing them all, the code is no longer invisible, and I tried adding one at the beginning, and it made almost the entire script disappear. Quite a few projects use these blocks, since they correspond to delete and shift. Other than the fact that this can hide the source from 3.0 remixes, I don't see much of an issue.

[towerofnix]

@thisandagain did you accidentally close this? I don't think it's fixed.

[thisandagain]

Tracking in:
llk/scratch-vm#1704
llk/scratch-vm#1609
llk/scratch-vm#1450
llk/scratch-vm#1030