I upgraded to 1.9.4, there is a bug. Now I am roll-back to 1.9.3. It is OK.

I have a pipeline job,

configured like below.

workspace name is jenkins-${NODE_NAME}${JOB_NAME}${EXECUTOR_NUMBER} originally.

This capture is from 1.9.3

But in case of 1.9.4,

first build is normal, but all builds from second have a problem.

log is 

com.perforce.p4java.exception.RequestException: //jenkinsTemp-7a493879-8d2c-4b5b-a1b4-d7f4dfd86e81/Jenkinsfile - file(s) not in client view.

at com.perforce.p4java.impl.mapbased.server.cmd.ResultMapParser.handleWarningStr(ResultMapParser.java:164)
at com.perforce.p4java.impl.mapbased.rpc.OneShotServerImpl.execStreamCmd(OneShotServerImpl.java:545)
at com.perforce.p4java.impl.mapbased.rpc.OneShotServerImpl.execStreamCmd(OneShotServerImpl.java:461)
at com.perforce.p4java.impl.mapbased.server.cmd.BaseDelegator.execStreamCmd(BaseDelegator.java:163)
at com.perforce.p4java.impl.mapbased.server.cmd.PrintDelegator.getFileContents(PrintDelegator.java:56)
at com.perforce.p4java.impl.mapbased.server.Server.getFileContents(Server.java:2288)
at org.jenkinsci.plugins.p4.scm.P4SCMFile.content(P4SCMFile.java:145)
Caused: java.io.IOException
at org.jenkinsci.plugins.p4.scm.P4SCMFile.content(P4SCMFile.java:147)
at jenkins.scm.api.SCMFile.contentAsString(SCMFile.java:338)
at org.jenkinsci.plugins.workflow.cps.CpsScmFlowDefinition.create(CpsScmFlowDefinition.java:110)
at org.jenkinsci.plugins.workflow.cps.CpsScmFlowDefinition.create(CpsScmFlowDefinition.java:67)
at org.jenkinsci.plugins.workflow.job.WorkflowRun.run(WorkflowRun.java:303)
at hudson.model.ResourceController.execute(ResourceController.java:97)
at hudson.model.Executor.run(Executor.java:429)

and configure page shows

workspace name and view mappings is different name like

workspace name : jenkinsTemp-ebdxxxx

view mappings : //jenkinsTemp-abcxxxx