OnAsyncPageUnloaded not working on mobile

[baxing]

Hello, 

I tried to use IWForm's OnAsyncPageUnloaded  event for triggers when the page is unloaded on browser side (due to browser/tab closing) to close session with command.

Code:

  if AIsCurrent and (WebApplication.ActiveFormCount = 1) then
   WebApplication.SelfDestruct;

It's ok on desktop browser (Chrome, Edge) but I tested on my mobile browser (Chrome, Safari) but It's not working.

How do I get it to work on mobile?

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Note :

This link for unload event, at Usage note paragraph say that :

Especially on mobile, the unload event is not reliably fired.

Thank you