Lowest Effort shows '0' while all effort values actually are > 0

[MichelSelten]

I created a query returning elements (bugs and stories). Each element had an effort > 0. (lowest effort set to 1)
In the QueryTileExtended, I set the aggregate field to Effort and Aggregation type to Lowest.
Observed: result is 0
Expected: result is 1

[arsenikstiger]

Fixed