ImplicitProducer try_enqueue in multi thread may not act as expected

By default, a queue can store 1024 items. However, when multiple threads insert data into the same queue under the ImplicitProducer mode, switching between producers causes try_enqueue to fail before reaching 1024 items.

The reason is that after switching producers, try_get_block_from_initial_pool is called again, resulting in each block storing fewer than 32 items before switching occurs.

​Is this an issue or expected behavior?​​