EXPLAINED: Large bats - maybe a bug, maybe not

[Biol]

I wondered if I should be engaged or not here. It was a bit odd.

* R HP:Hurt MV:Fresh >
A large bat has arrived from the east.
You swiftly dodge a large bat's attempt to hit you.

* R HP:Hurt MV:Fresh >
A large bat tries to hit you, but you parry successfully.

* R HP:Hurt MV:Fresh - a large bat: Scratched >
A large bat tries to hit you, but you parry successfully.

* R HP:Hurt MV:Fresh - a large bat: Healthy >
A large bat tries to hit you, but you dodge the attack.

* R HP:Hurt MV:Fresh > kill bat
You try.. but your arms are shorter than your dreams...

* R HP:Hurt MV:Fresh > l
Wind Through the Canopy
Large trees stand close together, their stems long and slim from battling
neighbours for the right to sunlight. Soft woosh-woosh sounds spread from
the canopies as the wind ruffles their leaves. The forest continues to the
southwest, but seems to end not far to the east.
[ obvious exits: E S ]
A large bat is visible flying high in the sky.
A warhorse is here, stamping his feet impatiently, being ridden by you.
An ancient, gnarled tree looms over you.
An ancient, gnarled tree looms over you.
An ancient, gnarled tree looms over you.

* R HP:Hurt MV:Fresh >
A large bat tries to hit you, but you dodge the attack.

* R HP:Hurt MV:Fresh - a large bat: Scratched > res
Rest while fighting? Are you MAD?

* R HP:Hurt MV:Fresh - a large bat: Scratched >
You swiftly dodge a large bat's attempt to hit you.

* R HP:Hurt MV:Fresh - a large bat: Scratched >
A large bat tries to hit you, but you dodge the attack.

* R HP:Hurt MV:Fresh >
A large bat tries to hit you, but you parry successfully.

* R HP:Hurt MV:Fresh - a large bat: Healthy >
A large bat leaves east.

* R HP:Hurt MV:Fresh > l
Wind Through the Canopy
Large trees stand close together, their stems long and slim from battling
neighbours for the right to sunlight. Soft woosh-woosh sounds spread from
the canopies as the wind ruffles their leaves. The forest continues to the
southwest, but seems to end not far to the east.
[ obvious exits: E S ]
A warhorse is here, stamping his feet impatiently, being ridden by you.
An ancient, gnarled tree looms over you.
An ancient, gnarled tree looms over you.
An ancient, gnarled tree looms over you.

[Shinobi]

happens when aggro mob that flies too high for projectiles / auto attacks engages. You generally can't hit back but they disengage everytime they aggro because of this.

[Jomin]

IIRC if you can lead the bat to somewhere inside (a isolated cave / structure or some such) and/or (can't remember which) you just keep swinging your weapon you occasionally will get a hit - as Shinobi says they disengage very quickly...

[Thore]

With crows and ravens if they aren't flying too high once they follow you, yeah, you can lead them into a no-ride and spam "k raven" a million times until it hits it. The bat thing is odd, someone can "assist Biol" when the bat aggros you and they will fight it, but they can't "k bat" to get on it when it's hitting you.