DSP Robotics Support

I was working with a big code, so I shrink the toolbox to zero size (completely to the left) and now I can't bring it back.
Even when I point cursor completely to the left, the "left-right resizing" cursor doesn't show. Is there a way to restore it to default somehow? Do I need to reinstall Flowstone?

I'm sure this is either a completely trivial task I'm missing or an annoying bug / lack of a feature.

It's Flowstone 3.0.7

Here i can't replicate the issue.
But you can try to reset the registry value:

HKEY_CURRENT_USER\Software\DSPRobotics\FlowStone
[binary value] Toolbox Width = ee 00 00 00

I've found out what is the problem. It happens only when window is not maximized. It disables the toolbox like when you do it via view menu (between "navigator" and "status bar") however it doesn't update the flag on that menu (that confused me into thinking the toolbox is still active but zero width). I'm pretty sure it is a bug, because when maximized, the toolbox doesn't disables when pushed to zero width.