Clone to other window create different versions of the file

[tiendadehipnosis]

Description of the Issue

I use Notepad++ to edit mql4 programs. Since there is no support for mql4 (mq4 files) on Notepad++ I use either C++ o C# descriptors. Since the last upgrade I have been having problems when I open my files and then I clone to the other window, which in my case is a must. The problem is that either it tells me that another program changed the file externally or it simply loses the last changes.

Last night I was working until past midnight and was able to fix a big bug in one of my programs and to my surprise I opened it today and all my modifications are lost.

Steps to Reproduce the Issue

1. Open a file
2. Clone it to other window
3. Work normally for hours making changes to the same file in both windows

Expected Behavior

I expect it to behave the way that it was doing before the last update, that both windows had the same version of the file and I just needed to save one of them and I wouldn't loses my modifications.

Actual Behavior

It had happened several times, at some point Notepad++ tells me that my file was changed externally and asks me whether I want to reload it. I say no, but still I lost my changes.

Debug Information