What happend to the cobras?

Question

I usually hunt in cobras bastion and I refill the empty ritual flask  on the green djinn area that respawned 6 to 8 cobras. Lately there are none I saw them disappear in my face and haven't seen them since anyone knows why or how this happens or how could it be fix ?
images to prove 

There were none around the area they weren't trapped somewhere else and I waited around an hour and still couldn't find any after ss there was none still

Comments

Maybe a bug? There is another respawn with cobras more closer to cobra bastion here: https://tibia.fandom.com/wiki/Mapper?coords=130.32-127.163-7-4-1-1%20here

Just open the hole, go down and u will find 2 cobras near the entrance.

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Doesnt seem like it because it has lastest 3 server saves and they stared disapearing in lions rock too and spawned larvas maybe an unknown world change ?

Answer 1

I notice this too, and with sometimes I went to this place I can tell: Cobras appear during the day and during the night Bats will appear.

Answer 2

With the Summer Update last week a few places around the Ankrahmun mountains were changed, the most notable change being the addition of Werehyaenas to some places. It's likely that this location was changed as well.

As suggested by @Oriibsz on the comments, though, it's easier to find Snakes in the tomb just south of the Bastion.

Comments

Im not entirely sure about this since i saw them go away it wasnt during a server safe they poof in front of me few days ago and wasnt mention in the update but seems like the most likely answer so i will mark it as correct

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does it have anything to do with day or night ? just a guess i didn't look into this.

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have went both time, i have went more than once before opening this question

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I guess Cipsoft is making sure it is more difficult to do refill of the flask. Same as ground on the way to Urmaluluh has been "buffed"- not only to have the ground better place to hunt, but also to make access to the boss more challanging. Ofcourse you can have few of them with you, but then you have to put some investment into that.