Webtop 6.8 || Invalid input: context=HTTP header value: Header Manipulation while viewing using Acti

We are trying to use view action of Actionservice.execute method, but facing issues of header manipulation while files having special character in filename.

Version Details:

CS: 7.2
Webtop: 6.8

Please suggest.

Error Message Details below:

WARN IntrusionDetector:449 - [SECURITY FAILURE Anonymous:null@unknown -> /webtop/IntrusionDetector] Invalid input: context=HTTP header value: Header Manipulation: HttpTransportManager, type(HTTPHeaderValue)=^[a-zA-Z0-9()-=*.\?;,+\/:&_ ]$, input=%23Doc.pdf
org.owasp.esapi.errors.ValidationException: HTTP header value: Header Manipulation: HttpTransportManager: Invalid input. Please conform to regex ^[a-zA-Z0-9()-=*.\?;,+\/:&_ ]
$ with a maximum length of 1024
at org.owasp.esapi.reference.validation.StringValidationRule.checkWhitelist(StringValidationRule.java:144)
at org.owasp.esapi.reference.validation.StringValidationRule.checkWhitelist(StringValidationRule.java:160)
at org.owasp.esapi.reference.validation.StringValidationRule.getValid(StringValidationRule.java:284)
at org.owasp.esapi.reference.DefaultValidator.getValidInput(DefaultValidator.java:214)
at org.owasp.esapi.reference.DefaultValidator.getValidInput(DefaultValidator.java:185)
at com.documentum.web.security.validators.WDKESAPIValidator.getValidHeader(WDKESAPIValidator.java:368)
at com.documentum.web.contentxfer.http.HttpTransportManager.getContentDispositionValue(HttpTransportManager.java:655)
at com.documentum.web.contentxfer.http.HttpTransportManager.sendOutgoing(HttpTransportManager.java:319)
at com.documentum.web.contentxfer.http.HttpTransportManager.sendOutgoing(HttpTransportManager.java:282)