RE: Splinterlands: New Card Selection UX, Seeking Opponent and Battle Rules screen. Better optimized for mobile gaming, harder to rearrange cards on desktop though. (February 2025)

Rearranging cards can be an issue, but I found the solution to it. Just scroll the cards up to the top. After putting all your cards, scroll up to the top of the card selection area, then rearrange the cards in your lineup. I found that solution after playing around for a bit. It seems to mess up on rearranging cards if you don't have that specifically.