Mixing materials function does not work for the landscape

Development Rendering
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1

Hello. Mixed materials function (An image 2-5) to landscape (image 1). Result: (image 6). Does not work.

Now I disconnect from normal materials
The result (image 7). Everything is working. It works only without the normal. What is the problem?

1375×787 168 KB

1080×731 137 KB

1560×880 238 KB

1463×885 189 KB

1319×832 172 KB

1918×1012 269 KB

1918×1018 410 KB

2

Make sure that you are not running into 16 texture samplers limit. If you do, try setting your texture samplers to Shared:Wrap

3

It worked. Thank you very much!