JIRA v6.4.1 Communication Breakdown while posting comments

[Deleted user]

While trying to post comments in an particular ISSUE (for some others it works) i get "Communication Breakdown" problem.

The only way to post a comment in such issues is to post the comment while resolving the issue and then i need to reopen.

Sometimes it helps if i remove temporary the issue from Sprint - but not always.

I've already checked https://confluence.atlassian.com/display/JIRAKB/JIRA+Links+Menu+Errors+due+to+Communication+Breakdown but did not helped.

I get no error in attlassian-jira.log

No error in apache error log.

in access log I get a:

xx.xx.xx.xx - - [16/Jul/2015:10:49:48 +0200] "POST /rest/api/2/issue/OPERATIONS-2914/comment HTTP/1.1" 400 110
xx.xx.xx.xx - - [16/Jul/2015:10:49:49 +0200] "GET /rest/quickwatch/1.0/notification/count/unread?_=1437036593681 HTTP/1.1" 200 27
xx.xx.xx.xx - - [16/Jul/2015:10:49:49 +0200] "GET /rest/scriptrunner/1.0/message?_=1437036593862 HTTP/1.1" 204 -

[Deleted user]

Any ideea?

[Deleted user]

Even if i reopen the issue - problem still exists.

[Deleted user]

No proxy.

Just apache between me and jira.

In Firefox:

"submitting form:" batch.js:18616:199
"JIRA.Events.NEW_CONTENT_ADDED: " batch.js:204:328
Object { type: "newContentAdded", timeStamp: 1437039580518, jQuery172012567291339557074: true, isTrigger: true, exclusive: undefined, namespace: "", namespace_re: null, result: undefined, target: HTMLDocument → OPERATIONS-2914, delegateTarget: HTMLDocument → OPERATIONS-2914, 3 more… } batch.js:204:328
"[behaviors] new content added, clearing outstanding errors..." batch.js:18640:218

in Chrome:

submitting form:
POST https://jira.paradine.at/rest/api/2/issue/OPERATIONS-2914/comment 400 (Bad Request)
JIRA.Events.NEW_CONTENT_ADDED:
d.Event {type: "newContentAdded", timeStamp: 1437039703447, jQuery17204086012684274465: true, isTrigger: true, exclusive: undefined…}
[behaviors] new content added, clearing outstanding errors...
polling for notifications

[Radu Dumitriu]

Is the issue closed or non-editable at that time ?

[Radu Dumitriu]

That's the common cause

[Radu Dumitriu]

Any error in the browser's console ? Is there any proxy between you and JIRA? The 400 (bad req) should be investigated a bit more.... In the meantime, get some LedZep: Communication breakdown / It's always the same / I'm having a nervous breakdown / Drive me insane