In Studio 3T on Windows, for me, the File > Save > Save File action has a keyboard shortcut of Ctrl+Shift+S. That seems unusual. All the Windows editor apps I'm familiar with use Ctrl+S for Save. Ctrl+Shift+S is for "Save All", where I've seen it. I think that's pretty standardized, or at least a widely used convention. Maybe Save File should be Ctrl+S instead, in Studio 3T too?

I don't think I've customized my Studio 3T key bindings at all, so I think this is the default behavior.

This is as of Studio 3T 2024.3.1.