Why ticket number ID's are skipping in Project?

[Charlotte Bish]

We have a Software Project in Jira which when you go to 'create a new ticket' but then discard i.e. do not submit the creation, it still seems to count the ticket ID as used somewhere in the backend. 

i.e. - I go to create a new ticket (lets say it should be ID-30 based on next numeric ticket) but then discard the ticket. Then I go to create a new ticket and do complete it, I will then see ID-31 and ID-29. The initiated but discarded ID-30 is taken but not searchable? 

We do not see this with other Jira Software projects and wondered if someone can help understand what setting may be doing this?  

[Alexey Matveev · Accepted solution]

Hello,

Could you check that the filter, which is defined in the General page, returns any issues? There is also an additional JQL query in the bottom of the General page, kindly check if you add it to the filter JQL query, it will return any issue.

[Karthiga Sethuraj]

The filter defined for the project worked fine. But the Kanban board sub-filter at the bottom was defined as - "fixVersion in unreleasedVersions() OR fixVersion is EMPTY"

This one did not return any issues, so I fixed that.

Though not sure how this Kanban board sub-filter got updated. 

Anyway I was able to fix this with your input :) Thank yo, appreciate your help.

Happy Friday !!

[Karthiga Sethuraj]

Screenshot of the Board Settings.