As you can see in the picture the SVG is higher than the actual block. This makes the inline use blocks look bad.

I am trying to run Snap4Arduino (downloaded the binary from snap4arduino.rocks) om MacOS 10.13.1,
but I cannot be started. I get an error:
The application "Snap4Arduino.app" can't be started -47
How can the issue be resolved?

Current method of reporting bugs is kinda iffy and should be improved:

• Allow reporting issues w/o a Scratch or GitHub account
• Prefer GitHub issues over Scratch comments
• Make it clear what information you should include in reports (especially important for Scratch comment reports, which generally lack a lot of information)

If you use scipy 0.17 or more installed via Conda, you will have trouble to generate CPFE code.
loadmat function doesn't work, see following discussion on Github about this topic :
[https://github.com/ContinuumIO/anaconda-issues/issues/650]
[https://github.com/scipy/scipy/issues/5882]
You have to downgrade to scipy 0.16.0 (e.g. conda install scipy==0.16.0 or install Python 2.x)...
To check y

Pretty straightforward. Arrow keys, space, etc... shouldn't perform the default action when project is focused.

Thanks to s_federici for pointing this out. :)