I'm getting some errors in javascript, but for some reason google chrome wont print the error but shows only a thin red line. 
Also strange that when the thin red line is displayed the console window scrolls up, but not to the very top of history. 

Has anyone seen this before and is there something I can do to get the actual text of errors displayed?

[![enter image description here](https://i.stack.imgur.com/aLLxS.png)](https://i.stack.imgur.com/aLLxS.png)

UPDATE: looks that these messages are occurring as result of exceptions in promises. When I debug and step through `console.error(ex.message)` code it still prints it as a thin red line. Maybe something to do with a permission to use console from a promise thread?

running Google Chrome Version 65.0.3325.181 (Official Build) (64-bit) on Ubuntu Linux.