I apologize if this has been reported before, and I also apologize that I do not have an accommodating screenshot to go with it for now, but I just found this bug and wanted to tell about it.
Basically, what I'm reporting is that if a Zoroark is sent out, disguised as say, Infernape, then the real Infernape is switched in at a later time, Zoroark and Infernape's known moves will be
combined on the status window when you hover over the Infernape's sprite.
Here is an example. My opponent's team consists of this:
Zoroark:
-Shadow Ball
-Nasty Plot
-Focus Blast
-Dark Pulse
Infernape:
-Close Combat
-Flare Blitz
-Thunder Punch
-Grass Knot
So let's say my opponent sends out his/her Zoroark disguised as the Infernape, and uses Dark Pulse and Shadow Ball. If the real Infernape comes out a later time, and eventually uses all of its moves in its set, it will show Infernape's know moves as:
-Close Combat
-Flare Blitz
-Thunder Punch
-Grass Knot
-Shadow Ball
-Dark Pulse
As you can see, Infernape's status window would show all of the moves it used (highlighted in
Blue), as well as the 2 moves Zoroark used disguised as Infernape (bolded and highlighted in
Red). This is clearly wrong, not only because the move limit is obviously 4 and not 6, but Infernape obviously does not have Shadow Ball and Dark Pulse in its moveset, unlike Zoroark.
Currently, this only seems to happen with the opponent's Pokemon, I have no idea if this happens with my own "Opponent sees" status window. I'll see if I can get a screenshot of it later.
Edit: Apparently, this has been reported before, and the response has been something like "It's not a bug because you wouldn't know whether it's a Zoroark under an Illusion or the real one." But, in my experience, this bug happens even after the Zoroark's Illusion has been broken and even after it's fainted.
Edit No.2: So I finally have a picture of the glitch in action... but it's happening to
me, instead!
As you can see, When Zoroark was disguised as Manectric, it used both Knock off and Flamethrower, moves of which aren't even in Manectric's moveset. And if you take a look at the battle log, you can see that Zoroark fainted (and also had its Illusion broken) the turn right before Manectric was sent out.