A user has reported that the player frame gets placed at the bottom of the CompactPartyFrame container when using the addon SoloRaidFrame which leaves unwanted spacing at the top.

Not sure how if I accidentally fixed this, but it's working as expected with the "Solo Raid Frame NV" addon (the "Blizzard Raid Frames - Solo Frame" addon is broken).
The solo player frame is at the top of the container and no unwanted space is visible.