Please see the UDN for a potential fix/workaround description.
Download the licensee issue here - [Link Removed]
Hit PIE
Open the console and enter "DebugCreatePlayer 1"
Turn player 1 180 degrees, the heightfog view in player 2's view will disappear.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-127669 in the post.
| 0 | 
| Component | UE - Graphics Features | 
|---|---|
| Affects Versions | 4.27 | 
| Target Fix | 4.27.1 | 
| Fix Commit | 17619293 | 
|---|
| Created | Sep 23, 2021 | 
|---|---|
| Resolved | Sep 24, 2021 | 
| Updated | Dec 1, 2022 |