Moving the Narrow Region to a separate tab and closing gives an error

[idbrii]

1. Select a block of text

2. :NR

3. :wincmd T

4. :close

   Error detected while processing BufWinLeave Autocommands for "<buffer=10>":
   E121: Undefined variable: b:nrrw_instn
   E116: Invalid arguments for function 328_NRBufWinLeave

However, modifying and saving (:w) correctly applies to the original text, so it seems this is a valid use case.

Tested on 19e79fb, gvim 8.1.527, on Win10.

Also, I just found the :NR! command which I can switch to as my default so I'm less bothered by this bug. Thanks for the great plugin!

[chrisbra]

latest master fixed this not completly. It works, if you use :noa wincmd T to make sure the WinEnter autocommand does not trigger for the narrowed window. Not sure how to fix this currently.