As intended?

wilderness <31hp 379m 471mv 11072tnl (12.13%)> down
You steel your resolve and prepare to venture beneath the water's surface.
The Black Waters of the Sea
The murky black waters of the sea provide little in the way of visibility.
The crashing waves of the surface stir up the silt, leaving a swirling
dark waterscape. The light that filters in is a sickly green. At times cold,
at times warm, the waters disturb even the creatures that inhabit them. A
dense undersea forest prevents passage to the south.


(Translucent) A jellyfish drifts by with long tendrils reaching out toward you.
A sea bass is meandering along looking for fingerlings to eat.
A sea bass is meandering along looking for fingerlings to eat.

wilderness <32hp 379m 542mv 11072tnl (12.13%)> where
People near you:
(PK) Crufon The Black Waters of the Sea

wilderness <32hp 379m 542mv 11072tnl (12.13%)>
The cloud of wasps has difficulty surviving in this environment.
You swat furiously at the cloud of wasps surrounding you, as they bite you incessantly.
Your cloud of wasps grazes you.
You sure are BLEEDING!

wilderness <27hp 379m 542mv 11072tnl (12.13%)> aff
You are affected by:
Physical effect: 'water breathing' for 25 hours.
Skill: 'hydrophobia' modifies morale by -31 for 5 hours.
Skill: 'berserk' modifies armor class by 16 for 1 hours.
Skill: 'berserk' modifies hit roll by 3 for 1 hours.
Skill: 'berserk' modifies damage roll by 6 for 1 hours.
Spell: 'cloud of wasps' modifies strength by -2 for 0 hours.
Skill: 'feral growl' modifies save vs paralysis by -6 for 0 hours.
Skill: 'feral growl' modifies save vs mental by -6 for 0 hours.
Skill: 'feral growl' modifies damage roll by 2 for 0 hours.
Skill: 'feral growl' modifies hit roll by 5 for 0 hours.
Skill: 'slow' modifies dexterity by -4 for 2 hours.

wilderness <27hp 379m 542mv 11072tnl (12.13%)>
The cloud of wasps has difficulty surviving in this environment.
You swat furiously at the cloud of wasps surrounding you, as they bite you incessantly.
Your cloud of wasps grazes you.
You sure are BLEEDING!

wilderness <19hp 379m 542mv 11072tnl (12.13%)>
The cloud of wasps has difficulty surviving in this environment.
You swat furiously at the cloud of wasps surrounding you, as they bite you incessantly.
Your cloud of wasps grazes you.
You sure are BLEEDING!

Given that there's a custom echo for what's happening, it's puzzling to me that you think this is a bug.