Align column size in Nested table editor

I’m unable to align column width to the size of data with double click on the rigth side of the header: it shows a grid pop-up editor instead of doing the automatic resize.
There is no right mouse click option for this kind of data grids.

t.

That grid doesn’t have the usual Toad grid popup menu because it’s a different class of grid. The columns size automatically when the dialog is first opened, but it doesn’t do so when you go from one record to the next in the master dataset. I’ve added a rt-click menu with a “Size Columns to Data” item.

The columns size automatically when the dialog is first opened,
This is not true if you see the attached screenshot, all of "ERTEK" values are fixed 100 character width.

Thanks for the rt-click menu that will be enough for me.

T.