Syntax error when mapping multi-line text field from JIRA to Perforce

Steps to reproduce

1. enable Perforce Job Integration in JIRA
2. create a multi-line text field in JIRA
3. create a Job Checkbox custom field (in JIRA) for Perforce
4. put these fields on Create Issue screen
5. follow this to add a new field to Perforce jobs
6. edit Perforce Job Integration -> Map Custom Fields and map the multi-line text field (step 2) to the Perforce field (step 5)
7. create a new JIRA issue and tick Yes at the Job Checkbox field (step 3) to have it duplicated as a Perforce job
8. also enter several lines into the multi-line text field e.g.:

   FirstLine
   SecondLine
   ThirdLine
   

9. click Create

Expected behavior

The JIRA issue is duplicated as a Perforce job with the correct field mappings

Actual behavior

A Perforce job is not created because of this error in JIRA log:

2015-03-12 21:58:29,401 http-bio-2768-exec-18 ERROR admin 1318x2636x1 jku0d9 192.168.1.100,0:0:0:0:0:0:0:1 /secure/QuickCreateIssue.jspa [com.perforce.api.Debug] P4 exited with an Error!
2015-03-12 21:58:29,402 http-bio-2768-exec-18 ERROR admin 1318x2636x1 jku0d9 192.168.1.100,0:0:0:0:0:0:0:1 /secure/QuickCreateIssue.jspa [jirafisheyeplugin.perforce.listener.JobUpdateListener] Could not commit job: Job: DEMO-17
User: admin
Description:
	Test

com.perforce.api.CommitException
	at com.perforce.api.Job.commit(Job.java:365)
	at com.atlassian.jirafisheyeplugin.perforce.listener.JobUpdateListener.createJob(JobUpdateListener.java:42)
	at com.atlassian.jirafisheyeplugin.perforce.listener.JobUpdateListener.workflowEvent(JobUpdateListener.java:30)
...
Caused by: java.io.IOException: error: Error in job specification.error: Error detected at line 11.error: Syntax error in 'SecondLine'.
	at com.perforce.api.P4Process.closeProcess(P4Process.java:587)
	at com.perforce.api.Job.commit(Job.java:361)
	... 226 more

Note

• If only 1 line is entered into the text field, a Perforce job is created successfully
• In Perforce, multiple lines can be manually entered into the same field
• It doesn't matter whether the multi-line text field in JIRA uses Default Text or Wiki Style renderer

Workaround

Using HTML tag <br/> to indicate new lines works. For example, using this single line in the multi-line text field:

FirstLine<br/>SecondLine<br/>ThirdLine

• It appears as a single line, thus it works
• In Perforce, the field is rendered correctly with separate lines