The new look (v 6.0.5) XTherion editor seems to be missing the small button control that allows resizing of the side panel.
I often like to make it quite large when editing objects with a long options string.

Is resizing of the panel still available and I’m just not seeing it, or is it perhaps a bug?
Therion 6.0.5
Windows 10 Home v 21H1 9043.1526