Feature to adjust sidebar width in detail layout

I would like to suggest to allow adjusting the width of the sidebar in detail layout by interactively click and drag the vertical divider line between the sidebar and the detail. Note that adjusting the width of sidebar would imply that the detail part is also adjusted as well.

Currently now, i think the sidebar is quite narrow, imo.

While waiting for such feature, wonder if any workaround exist to allow me to make the sidebar more wider

If allowing us to adjust the width of the sidebar is not easy, at least hope can give us a predefined width -e.g narrow, medium, wide, otherwise if the wording in the sidebar are long, will be difficult to read.