since the Arma 3 update 1.66 for dedicated servers it appears an issue in the rpt log of the server, that the addon a3_characters_f cannot loaded in. But the addon pack (characters_f.pbo) exist in the addons folder.
So the rpt log shows me following message:
18:51:59 Warning Message: You cannot play/edit this mission; it is dependent on downloadable content that has been deleted. a3_characters_f
We fixed the issue with the endless reloading of the mission. It was an error with a texture.
But we tried some more, we unbinarized the mission and delete the addon from the required addon array.
The test with that unbinarized mission have the same issue like before.