Missing worklog author name in Webhook body after an werklog is created

[rvd]

Since yesterday the webhook doesn't return an name field in the author object within the workog: this is the result i'm getting:

{
"timestamp": 1568276220425,
"webhookEvent": "worklog_created",
"worklog": {
"self": "https://--------.net/rest/api/2/issue/38303/worklog/47866",
"author": {
"self": "https://-------.net/rest/api/2/user?accountId=some id",
"accountId": "some id",
"emailAddress": "\"?\"",
"avatarUrls": {
"48x48": "https://secure.gravatar.com/avatar/5a078822f26fe7c3b3f279b819c2bcfc?d=https%3A%2F%2Favatar-management--avatars.us-west-2.prod.public.atl-paas.net%2Finitials%2FRH-1.png&size=48&s=48",
"24x24": "https://secure.gravatar.com/avatar/5a078822f26fe7c3b3f279b819c2bcfc?d=https%3A%2F%2Favatar-management--avatars.us-west-2.prod.public.atl-paas.net%2Finitials%2FRH-1.png&size=24&s=24",
"16x16": "https://secure.gravatar.com/avatar/5a078822f26fe7c3b3f279b819c2bcfc?d=https%3A%2F%2Favatar-management--avatars.us-west-2.prod.public.atl-paas.net%2Finitials%2FRH-1.png&size=16&s=16",
"32x32": "https://secure.gravatar.com/avatar/5a078822f26fe7c3b3f279b819c2bcfc?d=https%3A%2F%2Favatar-management--avatars.us-west-2.prod.public.atl-paas.net%2Finitials%2FRH-1.png&size=32&s=32"
},
"displayName": "some name",
"active": true,
"timeZone": "Europe/Berlin",
"accountType": "atlassian"
},
"updateAuthor": {
"self": "https://-------.net/rest/api/2/user?accountId=5d38333b2acc2d0c6219d4c0",
"accountId": "some id",
"emailAddress": "\"?\"",
"avatarUrls": {
"48x48": "https://secure.gravatar.com/avatar/5a078822f26fe7c3b3f279b819c2bcfc?d=https%3A%2F%2Favatar-management--avatars.us-west-2.prod.public.atl-paas.net%2Finitials%2FRH-1.png&size=48&s=48",
"24x24": "https://secure.gravatar.com/avatar/5a078822f26fe7c3b3f279b819c2bcfc?d=https%3A%2F%2Favatar-management--avatars.us-west-2.prod.public.atl-paas.net%2Finitials%2FRH-1.png&size=24&s=24",
"16x16": "https://secure.gravatar.com/avatar/5a078822f26fe7c3b3f279b819c2bcfc?d=https%3A%2F%2Favatar-management--avatars.us-west-2.prod.public.atl-paas.net%2Finitials%2FRH-1.png&size=16&s=16",
"32x32": "https://secure.gravatar.com/avatar/5a078822f26fe7c3b3f279b819c2bcfc?d=https%3A%2F%2Favatar-management--avatars.us-west-2.prod.public.atl-paas.net%2Finitials%2FRH-1.png&size=32&s=32"
},
"displayName": "some name",
"active": true,
"timeZone": "Europe/Berlin",
"accountType": "atlassian"
},
"created": "2019-09-12T10:17:00.425+0200",
"updated": "2019-09-12T10:17:00.425+0200",
"started": "2019-09-12T09:16:45.829+0200",
"timeSpent": "1h",
"timeSpentSeconds": 3600,
"id": "47866",
"issueId": "38303"
}
}