Post Process Volume not updating in preview

1- Open Project

2- Go to Settings -> Preview Rendering Level -> High End Mobile -> Default High End Mobile

3- Open SampleMap

4- Edit a parameter in PostProcessVolume (for example Lens -> Bloom ->Intensity) and see that changes are not shown in preview

5- Reload SampleMap

6- Change the same PostProcessVolume and see that changes are reflected in real time

[Link Removed]

Vanilla 4.21.2

Win10

i have this problem UE4CC-Windows-58DC12AF4B97F057BD108FBFF569B2E9_0000

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