Error highlighting for missing semicolon is difficult to see

[leiboldm]

Forgetting to add a semi-colon to a line is one of my most common mistakes when I'm coding. However, it is very hard to see in my IDE because only the very last character of the line is underlined with the red error squiqqly. This is problematic because the Dart formatter will not run if you have a missing semi-colon in your code, and I run the Dart formatter frequently while coding. When the Dart formatter fails, it doesn't show an error message, so I'm left hunting my file for error squigglies. When the squiggly is too small, it can be difficult to see which causes me to waste unnecessary time looking for it.