"Results" pane doesn't have horizontal scroll bar.
@JohnyL Horizontal scrollbar is implemented and it's in auto-hide mode. In some cases, the horizontal scrollbar is hard to activate. marked as a ux bug.
@JohnyL could you please provide a screenshot so we can see the issue more clearly? Thanks!
Yes, here's a picture :)

Version 0.26.7
Commit 723c7cb3bfd80d87fc8a1141632089cd4808495c
Date 2018-02-16T21:34:47.034Z
Architecture x64
OS Version: Windows 10 Home 64-bit
Just to further this ticket a bit, the scroll bar is visible, at least in version 0.26.7, but only after a certain amount of rows are visible.
@mjcataldi Confirm that scroll bar now appears (even when there are no rows).
I think the issue is there are two vertical scrollbars. One for the Results Pane and one for each resultset data grid. In @JohnyL first screen shot it looks like the Results Pane scrollbar needs to be dragged to the bottom in order to see the resultset data grid horizontal scrollbar. Please reactive if this is not the case, or this is still an issue. Thanks!
Most helpful comment
I think the issue is there are two vertical scrollbars. One for the Results Pane and one for each resultset data grid. In @JohnyL first screen shot it looks like the Results Pane scrollbar needs to be dragged to the bottom in order to see the resultset data grid horizontal scrollbar. Please reactive if this is not the case, or this is still an issue. Thanks!