Leedsichthys burst attack bug when clamped/grabbed by tylo

When grabbed by my friend's tylo as leedsichthys I was able to spam the burst attack over and over again as many times as I had stamina. This played the sound of using the attack but not actually show anything visibly until you press it for the final time and it will count as usual with the animation of the burst playing. However, This is only client side since my friends told me that for every click of the ability I pressed they saw it being spammed on their end. Even when let go it went for a while after until however many times I clicked it added up and finally stopped.

While grabbed by a tylo as leedsichthys you are able to do all your attacks. I chose to do the burst attack to get back at my friend for clamping me but then was able to spam it as many times as I could before running out of stamina. I heard the sound of the burst attack but no visuals. The attack finally counted and showed on my screen only till my last press when I stopped spamming. My friends saw it go off every time I did it but only on their screens and it didn't count as damage till the final press. It played the full animation on their screens as if I was doing and was very blinding to them.

Assumed to get grabbed, use the ability once with the expected cooldown to follow, and then see it and it do damage.