Uploading a user avatar fails in IE 11

When logging in as a new user, if you upload an image and apply cropping, clicking the Confirm button does nothing. Compability mode is off.

The IE console shows the following:

ajax[40329971] error :

{ successful : false, status : 400, statusText : error, hasData : true, readyState : 4, requestId : 40329971, aborted : undefined, }

The returned error message is:

{"errorMessages":["Can not construct instance of int from String value '156.65997314453125': not a valid Integer value\n at [Source: org.apache.catalina.connector.CoyoteInputStream@3d7216a2; line: 1, column: 2] (through reference chain: com.atlassian.jira.rest.v2.issue.AvatarCroppingBean[\"cropperOffsetX\"])"]}