Client: 1.1.11 (Steam PC)
Once you are high enough level to have level 3 spell slots, when your Paladin hits with a melee attack at first everything works as expected. However once you run out of first level spell slots (see picture) the graphic incorrectly shows level 2 slots as being empty, level 3 slots as the level 2 slots, and no level 3 slots. In addition, you can continually click on the used up slots on the top to use smites forever. This is also true of Shield as a reaction.