Alias is not working in Table Panel

Grafana Elasticsearch
1

ENV
OS: Centos 7
Grafana: 7.1.5
Installed via tar.gz file

Problem

Alias is not working without Date Histogram
If i dont set Date Histogram, Alias is not working

vgca-01
vgca-011515×843 103 KB

But if i set Date Histogram, alias worked?

vgca-02
vgca-021521×705 95.8 KB

So what happen?
I try to join/merge beetween 2 query in to single table with field “org.L”, but two query have same field “Count” (alias is not worling) so join/merge transformations is wrong. It show two column (org.L, count) instead of (org.L, Total A, Total B)