It has already been reported. I had this issue as well:Not entirely sure if this has been reported
Some time during a short battle my opponent's Toxapex had 1 Toxic PP left according to the mouse-over window even though in reality he had 0 Toxic PP left. At turn 97 Spite hit Toxapex and only took 3 PP from Toxapex. Here a link to the battle replay: https://replay.pokemonshowdown.com/gen8nationaldex-1061104365
On the following image of the linked battle Toxapex is shown using Struggle despite the mouse-over window saying he still has 1 Toxic PP left.
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