JIRA service desk, error screen that issue wasn't created but it did

Question

JIRA service desk

When user tries to create an issue, there appeares error screen that user has to contact system administrator and update page in order to create issue

But even user gets this error screen issue is created (user don't understand this and tries to create issue again), as a result there are some duplicated issues

In JIRA logs there  are only some warns and nothing connects to these duplicate issues

There is attached screen of the error, it is said, that issue wasn't send, please reload page and try again, attention - fields will be cleared, if this isn't first time when you see this error contact to your JIRA administrator

*UPD*

It doesn't happen every time user tries to create issue

Denis Tsybulin · Answer

Tried to reproduce several times and check information in developer tool.

However I can't find there any usefull information.

Last time, I tried to create issue, and after pressing button "Create" screen hasn't changed (also there was no error screen). In developer tools, there were 2 successfull requests and after some time, there were added 3-rd successfull request. And that's it.

Alexey Matveev · Answer

That is a problem with flickering errors. You have to reproduce the error and have a look at what happened in the Developer Tools.

Denis Tsybulin · Answer

Thank you for your answer, Alexey!

I forget to mention, that it doesn't happen every time.

I has just tried to create issue in developer mode, but it went successfully with out problems