Hey @denzs,
I have just create https://github.com/kamailio/kamailio/pull/3972 for this.
Can you maybe check whether kamailio still functions as intended (other than the tls.reload) with the new shared context stuff?
After applying the patch, set the new tls parameter `enable_shared_ctx` to 1 to the config file and you are good to go.
Any feedback is welcome!