Open
Description
Behavior
In 2.0, if there is no code attached to an edge triggered hat, when you then attach code to it while the condition is true, it runs the code, even if it was not previously false. In 3.0, the condition must have been previously false on an edge triggered hat in order for it to run.
It looks like 2.0 considers the hat to have been false before attaching any blocks. It has to be the addition of a block to a hat block without any other blocks under it to see this behavior.
Steps to Reproduce
In Scratch 2.0:
Add a when timer > 0 hat block
Drag out a play sound meow block and attach it to the hat
Note: the cat meows even though the timer was already greater than 0
In Scratch 3.0
Follow the same steps as above
Note: the cat does not meow
Operating System and Browser
Mac Chrome
CC @kchadha