Why doesn't the networking functionality of the app work when building from Unity with the Android App Bundle?

Question

Android

The project created on Unity was assembled for android using the internal collector. Tested on multiple devices. After debugging, I began to upload it to the Play Market for beta testing. It turned out that for publication it is necessary to include support for 64-bit architectures in the assembly, and the assembly itself must be carried out using the Android App Bundle. Found tips on the net how to do it, done. Now the Play Market accepts the assembly. But a problem arose, when it was launched on the device, network functions stopped working. The application is waiting for a response from the server. Experiments with assembly options have shown that the problem occurs precisely when assembling using AAB. I can not understand how to treat it, and I did not find solutions on the network. Has anyone come across this issue and figured it out?