Thanks for the quick fix 
These new changes honestly make a horizontal layout so enjoyable, and love the added touches like scaling the cover art in size depending on the panel height and adding user-customizable Alt key hotkeys to any field 
What do you think I should do with regard to marking the topic 'Solved'? I'm thinking of marking your post as the solution but would you prefer I wait until a non-beta release?
Thought I'd also capture some GIFs to demonstrate the auto-flowing fields without separators, and how fixed columns look with separators, for those just reading along.
Without separators (free flowing):
With a single separator to create a maximum of two columns only:
More separators can be added after any field to split fields following it into another column.