We are trying to use the Burndown Chart
We started sprint yesterday, but the time spend graph is not updating so we started looking at each jiras and noticed few issues.
B4-381 has 1 day remaining but developer logged 1 day time against it which was not showing up in the graph. Remaining stayed 1 day but 1 day was spent on it. See attached images.
Even though developers are logging time the graph stayed mostly flat.


