activity explorer, save model fails on jetty

Description

Save Model fails with "400 Bad Request" status code

Steps:
1. download and install latest jetty (jetty-9.3.11.v20160721)
2. deploy "activiti-5.21.0\wars\activiti-explorer.war"
3. start jetty
4. login to "http://localhost:8080/activiti-explorer/"
5. Navigate to "Processes" -> "Model Workspace"
6. select the "Demo model", click "Edit"
7. click the "Save" icon then the "Save" button

Observed:
1. "Unexpected error: could not save model" in UI
2. Browser says:
Request URL:http://localhost:8080/activiti-explorer/service/model/50/save
Request MethodUT
Status Code:400 Bad Request
Remote Address:[::1]:8080

Note: It works in Tomcat

Environment

Windows 7 64 bits
jetty-9.3.11.v20160721
\activiti-5.21.0\wars\activiti-explorer.war

Status

Assignee

Yvo Swillens

Reporter

Sergiu Ojog

Labels

None

Components

Affects versions

5.21

Priority

High
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