These are fairly minor, but I'm just making sure they're reported.

Glitch 1
1. Create a comment, and attach it to a block.
2. Right-click the grey area and click “clean up”.
3. The block moves, but the comment doesn't.

Glitch 2
1. Create a variable, and place it in a block.
2. Rename the variable.
3. The block doesn't adjust to fit the new variable.

Google Chrome, Windows 7 x64.