Finally we succeeded!
Kanban Combined WIP for Jira Cloud now has a new way to hide the extra columns and focus on what really matters!
Its use is very simple! Almost identical to the Jira Server/Datacenter version
Expand/Collapse columns new mode (Only in NextGen plugin version)
Now we can EXPAND/COLLAPSE in the toolbar in order to remove non-used columns!
Click in “x” button to remove non-used columns (don’t worry, because if you click again in COLLAPSE/EXPAND the columns will appear again!)