Why having Network manager and tons of conflict instead of wicd (and no conflicts)?

[Quest]

*funny how, reading all the comments, either about software or human behavior, I see a greater Linux problem [insert a 6posts long philosophical explanation here]*

[kcdtv]

A kind of déjÃ*-vu?
the problem is that we know the answers : great community = great distribution.
Look at arch linux for example : excellent forum, excellent wiki, good interaction between community and developers = One of the best "roling release" Operative System (if the not the best)
So, if you go rolling release, do as the pro do.

[kcdtv]

Good news...
As I didn't have network manager installed I don't know exactly when the issue was solved...
So; the good news is that network manager is not making any more conflict with the mode monitor interfaces created by airmon-ng
We can enable mode monitor normally, without using "check kill"
That means that we can be connected with one interface and have the other one working in monitor mode.
Like it should be and like it was one year before...
That's my conf :

kcdtv@kalimuxo:~$ apt show network-manager
Package: network-manager
Version: 1.1.92-1

kcdtv@kalimuxo:~$ uname -a
Linux kalimuxo 4.4.0-kali1-amd64 #1 SMP Debian 4.4.6-1kali1 (2016-03-18) x86_64 GNU/Linux

Just an updated kali rolling (upgrade AND dist-upgrade) nothing weird.