Odd dealer behavior
No errors in the console of both server and client but I see almost a skip in the framerate after the dealer recieves a response from the client, then the dealer freezes in the hand extended animation and turns their card regardless of the player's choice (without hitting if that was the client's choice). Very odd issue and I am going to experiment with removing other scripts to see if a conflict is the cause but overall kinda gamebreaking unfortunately.
Note that this script was working as of yesterday and sometimes does work fine, but I started experiencing this behavior after deactivating lscustoms and esx_boat and adding some addon cars today. Unfortunately did not test blackjack out at each deployment so I'm unsure where the issue lies.
Also, leaving the table does not work correctly. I get the UI for betting persisting even when leaving the casino
This issue is old, but if you do still experience the issue I'd reopen it as for now I believe this should work fine with the latest version and the issues you mention I haven't been able to reproduce personally.
I am seeing this exact issue on build 2189. The response seems to never get processed. It does the animation to show hold or hit, but then just waits for the timeout and moves on as a stand always.