I found a bug, in the form where add the Jons urls of Coincalculator, just let add a single line, I can only add a coin, it seems that the properties of the Text Box area are not well defined in programming. Try to enter a url, and then try adding a second line, do not let the line break.
I reckon that should be fixed upon next release, in the mean time, you can use "Ctrl-Enter" to add line break
I will correct this in the next release. Thanks for finding and sharing the workaround.