Really strange bug

[DDnite]

Hello. I was battling someone when something really weird happened:
I used Perish Song with Celebi but his Dugtrio trapped me and I died after 3 turns passed. Then the battle suddenly ended and my opponent won.
Here is the screenshot of the battle:

also, here is the battle log (because it may not be a bug but something we didn't notice):

Hide

Rules: Ladder Match, Sleep Clause, Freeze Clause, OHKO Clause, Evasion Clause, Species Clause, Strict Damage Clause, Self-KO Clause, Soul Dew Clause
dragon123 sent out Starmie (lvl 100 Starmie).
rotomtomtom sent out Dugtrio (lvl 100 Dugtrio ♂).
dragon123: good luck
rotomtomtom: thanks lol you too
rotomtomtom switched in Laxy (lvl 100 Snorlax ♂).
Starmie used Surf.
Laxy lost 22% of its health.
________________________________________

dragon123 switched in Tinkerbell (lvl 100 Celebi).
Laxy used Yawn.
Tinkerbell became drowsy!
________________________________________

Tinkerbell used Heal Bell.
Laxy used Pursuit.
It's super effective!
Tinkerbell lost 16% of its health.
Tinkerbell's leftovers restored its health a little!
Tinkerbell restored 6% of its health.
Tinkerbell fell asleep!
________________________________________

Tinkerbell is fast asleep!
Laxy used Pursuit.
It's super effective!
Tinkerbell lost 16% of its health.
Tinkerbell's leftovers restored its health a little!
Tinkerbell restored 6% of its health.
________________________________________

Tinkerbell is fast asleep!
Laxy used Pursuit.
It's super effective!
Tinkerbell lost 15% of its health.
Tinkerbell's leftovers restored its health a little!
Tinkerbell restored 6% of its health.
________________________________________

rotomtomtom switched in Stormyseas (lvl 100 Gyarados ♀).
Stormyseas's Intimidate cut Tinkerbell's attack!
Tinkerbell woke up!
Tinkerbell used Thunder Wave.
Stormyseas is paralysed! It may be unable to move!
Tinkerbell's leftovers restored its health a little!
Tinkerbell restored 6% of its health.
________________________________________

Tinkerbell used Perish Song.
Both Pokemon will faint in 3 turn(s)
Stormyseas used Ice Fang. It's super effective!
Tinkerbell lost 33% of its health.
Tinkerbell's leftovers restored its health a little!
Tinkerbell restored 6% of its health.
Tinkerbell's perish count fell to 3!
Stormyseas's perish count fell to 3!
________________________________________

rotomtomtom switched in Dugtrio (lvl 100 Dugtrio ♂).
Tinkerbell used Recover.
Tinkerbell restored 49% of its health.
Tinkerbell's perish count fell to 2!
________________________________________

Dugtrio used Stealth Rock.
Pointed stones float in the air around the foe's team!
Tinkerbell used Perish Song.
Both Pokemon will faint in 3 turn(s)
But it failed!
Dugtrio's perish count fell to 3!
Tinkerbell's perish count fell to 1!
________________________________________

Dugtrio used Stone Edge.
Dugtrio's attack missed!
Tinkerbell used Heal Bell.
Dugtrio's perish count fell to 2!
Tinkerbell's perish count fell to 0!
Tinkerbell lost 100% of its health.
dragon123's Tinkerbell fainted.
rotomtomtom wins!
dragon123: ?
rotomtomtom: ...dunno
dragon123: what happened
rotomtomtom: you didnt switch so you died
rotomtomtom: but i tried trapping you so you couldnt
dragon123: yeah but I have 5 pokes
rotomtomtom: i know that win thing is wrong lol
dragon123: I will report that
rotomtomtom: yeahh
dragon123: see ya
rotomtomtom: byee
rotomtomtom has left the room.

Does anyone know why this happened? If yes, please reply.

 

[DJXO9]

Bugs are no longer being fixed on Shoddy Battle, since the next sim is being released in a matter of weeks.

 

[Curtains]

This is a pretty damn big bug if you ask me that should get some notice dispite how rare this situation is.