When reloading a board after adding a card the ordering of cards in lists changes, possibly randomly.
To reproduce: open board with existing cards in a list. Add a new card to a list, which appears at the bottom of the list. Reload the board in some way, card ordering in the list has changed with some degree of randomness (more specifically I can't see a pattern in where cards then end up in the list). Lists that did not have new cards added appear unchanged)
Expected behaviour is the cards remain in the order last used as per current release.