Thread by @Atmaprajnananda

केशवं पतितं दृष्ट्वा, पाण्डवा हर्षनिर्भराः ।
रुदन्ति कौरवाः सर्वे, हा हा केशव केशव ॥

Seeing the fall of Keśava, the Pāṇḍavas jumped with joy. All the Kauravas cried aloud, "O! O! Keśava! Keśava!"

https://twitter.com/manjit2007/status/1302314942310133760

Clearly, there is something amiss here.
The Pāṇḍavas are such dear friends and admirers of Kṛṣṇa that they would obviously not rejoice in his fall.
The Kauravas hate Kṛṣṇa so much that they would surely not wail at his collapse.

The real meaning of this tricky verse is often understood by splitting the words in a way that is not readily evident.

The word keśavam (Keśava (Kṛṣṇa) meaning "the lord of creation, sustenance, and dissolution") can be split into ke śavam (ke=in the water; śavam=corpse).

The word pāṇḍavāḥ (Pāṇḍavās are sons of King Pāṇḍu) can be split into pā aṇḍavāḥ (pā = water; aṇḍavāḥ = born from eggs).

The word kauravāḥ (Kauravas are descendants of King Kuru) can be split into kau ravāḥ (kau = who; ravāḥ = noise, howl).

Now, with the word splits, we get the revised meaning:
//Seeing a corpse fall into the water, the crows jumped with joy. All the howlers cried aloud, "Oh! Oh! A corpse in the water! A corpse in the water!"//