Specifically there seems to be some issue with Safari browser. At one specific game operation, the PHP side checks for valid combinations of cards being submitted by the player. One failure I saw shows the PHP side rejecting the submission from the Safari player as invalid (it sends a message via notify), however the cards which were chosen are not invalid. The player reports the computer becomes briefly unresponsive, as if the script is pegging the CPU.
Other browsers have never shown this issue, in hundreds/thousands of this specific operation. Safari has not been tested as heavily as others. I need some time to get a better device to test more.
Summary: During a specific operation, the PHP side produced some message to the player which should never had occurred. The player's action was OK but PHP saw it as invalid.
So, I want to see my PHP logs to see what the PHP code is seeing and why it produced that message to that Player.
And I want to see console.log from the Safari browser, but I've had to remove it all, but I will now try to put it back in.
On Studio we had 1 Safari tester and didn't see this particular issue yet even going through this operation (but not tested many many times yet - I will do more).