Viewport UI disappears/reversed when pressing spacebar and down arrow

1. Create a level sequence
2. Press spacebar to play
3. Press down arrow while the sequence is playing
4. Press spacebar again while the sequence is playing

RESULT: The viewport UI disappears and is reversed (ie. pressing play will show the viewport UI)

[UE-23848] Bug Status

Request a info about UE-127172 bug tracker

i have this problem UE4CC-Windows-58DC12AF4B97F057BD108FBFF569B2E9_0000

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