Minecraft Ancient Warfare mod the edges?

Hay, I downloaded the mod on the 1.12.2 download from a new Project 'Minecraft Castle' which all mods got me.

But if I place an Animal Farm or something else, the white border will not show me why? Could anyone help me, please? Would love really: 3

Please pay attention to your letter and grammar (should not be an insult, your question will be easier to answer)
This is due to the video settings, or to your mod setting, just put a little over…

Okey, but what am I supposed to change?

I can't tell you that exactly, something at Ancientwarfare or something, even play with the modpack, with me the edges are (almost) always displayed, if not, just reboot F3+ A or MC and then it works again…

Okey is a pity it does not help

So, that works with F8 then the topic is already clarified, Thanks for your tips anyway