Yes. We do show the exception stacktrace with line numbers, number of occurrences of the exception and the transaction in which the exception occured, inside the webclient.
Navigate to APM -> application name -> Traces, to sort based on exception count and drill down from there, as shown in the screenshots below.
Trace page sorted based on Exception Count.
Clicking a particular transaction shows the Exceptions in that transaction and the corresponding Stacktrace.
The stacktrace details showing the lines of code.
On the other hand, you can also drill down from the Exceptions tab. Click on a particular exception and go to a particular trace.
Drill down to the trace to view the exception stacktrace.