List view results do not correlate to the trend graph

[MBarrott]

I've built a report that highlights the number of open security tickets, the number of closed security tickets, as well as a breakdown of which assignment groups managed these tickets at the time. 

This covers the last 3 months, broken up per week. 

The reports are generating results but when selecting points or bars in the report, the list views are not reflective of the results being show. Each point seems to reflect the time between the weeks rather than at X point it was Y value. 

How can I change this?

See below images as an example - report is showing that 14 tickets were assigned to Tech Support. 

Clicking the portion of the bar for tech support gives me no results:

[MBarrott · Accepted solution]

Resolved issue. 

This was seemingly a known issue and following the resolution steps on the following KB (KB1588882), I was able to fix the date points: https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB1588882