Memory leak in the PageAllocator

Hello
A memory leak occurs in a packaged project in Development mode.
A memory leak occurs in the PageAllocator.
In the Editor, this problem is not observed.

Occurs under the condition that the landscape beyond a certain distance (in our case it is enough to load more than 2 squares in the field of view, one square 11.5 km = visibility of about 30 km)

In the memory report there are changes only for PageAllocator, all other objects keep constant value.

The parameters of the landscape 511x511 scale = (X=2256.147705,Y=2256.147705,Z=144.531250)
LODDisrtibution : LOD 0 = 1.25, Other FLOOD = 1.3

The video link demonstrates this problem:
[- YouTube][1]

Help to remove the memory leak, please

Hello,

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Thanks

https://drive.google.com/file/d/1Dxm3hdLmopvw5i7dy4AQvy-5nUKRhD-r/view project

https://drive.google.com/open?id=11JJnnC5aWefygkSWvJobhamN04fXiukW pacage project