Debugging Google Spreadsheet script using libraries

Question

I am applying scripts in Google spreadsheets. Using the debugger it is easy to to find errors in the script that is local to the spreadsheet (container). In the script I use functions of external libraries, which is running fine. However, when using the debugger I am not able anymore to enter the library script. The debugger works fine as long as the script is local. But as soon as an external function is called I get an error

Cannot connect to server

when entering the code. Using the execute command from within the debugger works fine. Question In the past I was able to use the debugging function also to debug library functions. Somehow this has changed. Does anyone know what the reason is?

Answer 1

As per checking, it seems this is a well-known bug. Check Cannot debug library, debugger does not step in for details and bump the issue if you can.

You might also want to try and check if you can do it via the old IDE.

EDIT:

As per Rubén, seems like it also doesn't work on the old IDE too.

References:

• Debugging Library Code (New IDE)