Is it pix2pix model's Bug?

[xiaoxuwei12345]

After I set the number of Stable Diffusion models kept in memory, for example, set it to 3, then I found that when I switch between several models, the models are indeed read from memory(Loading weights from cache). But this instruct-pix2pix model seems to be special, it cannot be resident in memory like other models, Stable diffusion always reads this instruct-pix2pix model from disk.

Is this a BUG?