This issue is not fixed in 4.17, but should provide better information to help identify the cause.
This is a top crash occurring for users in the 4.14 and 4.15 releases. Unfortunately no user-descriptions of the issue have been provided, so information is limited.
Despite a different callstack, this issue bears resemblance to
repro steps unknown
Assertion failed: IsValidIndex(Index) && ChunkIndex < NumChunks && Index < MaxTotalElements [Link Removed] [Line: 354]
There's no existing public thread on this issue, so head over toAnswerHub just mention UE-44336 in the post.