No gaps between buttons except for default shape

[Anke]

@btnsjen

Magic number -2 is something I'd have never thought of

How can I get any details of my app crash?

Height and Width have the following interpretations: Non-negative values indicate a specific pixel value for the dimension. For negative values, there are three potential interpretations. -1 indicates Automatic, -2 means Fill Parent, and values < -1000 are used to encode percentages, e.g. 75% = -1075. For any property in App Inventor, we don’t store the value if it is the default value. This keeps the files smaller, which decreases the time to load/process/save files.