3365179 - Mails can't be picked up and throws the error java.lang.IndexOutOfBoundsException

Configured Mail Sender channel and while processing the message below error occurs,

Also XPI example 100 trace looks like,
Exception caught during processing mail message [0]java.lang.IndexOutOfBoundsException: bitIndex < 0: -61 
[EXCEPTION]
java.lang.IndexOutOfBoundsException: bitIndex < 0: -61
at java.util.BitSet.get(BitSet.java:623)
at com.sap.aii.af.sdk.xi.lang.Binary.readbase64bytes(Binary.java:394)
at com.sap.aii.af.sdk.xi.lang.Binary.<init>(Binary.java:249)
at com.sap.aii.af.sdk.xi.lang.Binary.<init>(Binary.java:213)
at com.sap.aii.af.sdk.xi.net.IMAPClientConnection.getBinaryFromMimeMessage(IMAPClientConnection.java:797)
at com.sap.aii.af.sdk.xi.net.IMAPClientConnection.getBinaryContent(IMAPClientConnection.java:772)
at com.sap.aii.af.sdk.xi.net.IMAPClientConnection.parseOAuthMails(IMAPClientConnection.java:635)
at com.sap.aii.af.sdk.xi.srt.xmb.XMBIMAPInitiatorServiceImpl$MailClientTask.invoke(XMBIMAPInitiatorServiceImpl.java:607)
at com.sap.aii.af.lib.scheduler.JobBroker$Worker.run(JobBroker.java:529)
at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37)
at java.security.AccessController.doPrivileged(Native Method)
at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:185)
at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:302)

• SAP NetWeaver 7.50
• SAP Process Integration 

bitIndex, java.lang.IndexOutOfBoundsException, Mail Sender channel. , KBA , BC-XI-CON-MAI , Mail Adapter , Problem