I noticed a bug with the move
fling.
Bulbapedia states that
Black Glasses, Dread Plate, Muscle Band, and Choice Band boost the power of Fling. Expert Belt boosts the power of Fling if the attack is super effective. Life Orb boosts the power of Fling but does not reduce the user's HP. On Showdown however, fling is apparently not boosted by these items. Here is a replay of me using fling on a doublade. The move should've done 80% minimum to doublade, but it looks like Showdown doesn't have it down right as the move only did 73%.
http://replay.pokemonshowdown.com/gen7rubeta-565257492
Calcs:
The Damage it should be doing.
+4 252 Atk Dread Plate Hawlucha Fling (90 BP) vs. 248 HP / 0 Def Eviolite Doublade: 260-308 (80.9 - 95.9%) -- guaranteed 2HKO
(260, 264, 266, 270, 274, 276, 280, 282, 286, 288, 292, 294, 298, 300, 304, 308)
Damage it is actually doing since fling is not boosted by the plate.
+4 252 Atk Draco Plate Hawlucha Fling (90 BP) vs. 248 HP / 0 Def Eviolite Doublade: 218-258 (67.9 - 80.3%) -- guaranteed 2HKO
(218, 220, 224, 226, 228, 232, 234, 236, 238, 242, 244, 246, 250, 252, 254, 258)
Please fix if it is indeed a bug. It might seem insignificant, but it would be pretty cool for it to work properly. Thank you.