Pipelines SSH key too short

Hi,

I have 3 repositories : A, B, C.
A has Pipelines enabled.
B has in its access keys the Pipelines public key of A, works well since August.
Builds of A run good.

Now, A needs C.
I want to add the same Pipelines public key of A in C access keys but I encounter this error : Key is not long enough. Bitbucket requires RSA keys be at least 2048 bits.

I did not see a mention in changelog or update notice on your side.

Have I to setup a new Pipelines public key of A and deploy it again in B and C ?
Or is it a bug on your side ?

Thanks