autohotkey - Swap LWin with LAlt not working properly

My workflow is:

• While working with the laptop keyboard, no changes needed


• While at the desk with ext monitor, use Apple external keyboard. Run AutoHotKey script to swap LWinwith LAlt. Kill AHK process when back to laptop keyboard.

Following script used on a windows 10 machine.

LWin & Tab::AltTab                     
LWin::Send {LAlt}                      
LAlt::Send {LWin}                      

On running the script following issues occur.

I am using all lowercase to refer to the physical keys (e.g. lwin) and ahk code for the semantic of a key press (e.g. LWin).

Problem 1

If the active window is Task Manager

Should: lalt produces LWin, lwin produces LAlt

Behaves: lalt produces LAlt. lwin produces LWin first time (shows start menu) however when pressed second time start menu is not hidden, although that is what LWin is supposed to do.

Problem 2

lctrl+lalt+tab does not produce the desired effect, it works like LAlt+Tab

Should: window switcher should stay open after key release

Behaves: windows switcher selects app and closes after key release

Problem 3

lalt+tab does not produce LWin+Tab

Should: show virtual desktops

Behaves: opens start menu with a wicked selection on the Expand button (top-left corner of start menu)

How can the script be improved to mitigate the problems?