Then we working with list of Structures with Opened Product Menu (look for attached image) Actions menu is not visible. Horizontal scroll also not visible - and it is working only if you are trying to swape on table itself (horizontal scroll does not work in case you trying to scroll with mouse, pointed under the table (in my picture - most place of page).
So - it is not clear what there are actions available for table items and it is not clear what you should scroll right to see this action menu.
In same time - Description column has alot of free space.
Problem not reproduced then Product Menu is closed - but reproduced then Product Menu is opened (but it is major case how we are working with content Administration for now).
Problem reproduced for other tables, there rows has Actions Menu.