If you delete a script that you have open while the Color3 constructor color picker is open, Studio will unceremoniously crash without throwing a crash dialog.
Looks like a similar crash happens if you right click in the gutter so the context menu with the “insert breakpoint” option is open when the script is deleted.
Reproduction:
Create a script in workspace and open it
Input Color3.new() and leave cursor in the parenthesis
Run wait(5) workspace.Script:Destroy() in the command bar