If you do hidden after resize in Layout, there will be a blank space on the right as much as the hidden cell.
Thank you for your report. The problem is confirmed. We’ll try to fix it in one of the future updates.
I’ll inform you about any progress on this issue.
We have fixed your reported problem in the latest dhx.Suite update (v7.3.13).
You can check it in your original snippet.
Please, try to download the latest available dhx.Suite build to get that fix.
Thank you for your report.