List of Paladin bugs that I know of

If you call your thrown hammer back too fast after casting it you call it back but it does not immediately go on cooldown.

When using your Q with Sword and shield and then using a seal ability, for instance Q to get the smite effect form red seal then using red seal for unstoppable you lose the lightning effect. If you do this the other way around (Seal then Q), you get both effects.

For some reason when using the red seals Q effect it doesn’t always prov the lightning “smite” effect. I have no reason/way to reproduce this one but it happens fairly commonly.