MessageRouter's onQueryCanceled is called only for one tab

[bluechips23]

I have a class that extends the CefMessageRouterHandlerAdapter and I am taking advantage of the Java-JS integration.

The code looks like this:

Code: Select all

public class MyMessageRouter extends CefMessageRouterHandlerAdapter {
   
   @Override
   public boolean onQuery(CefBrowser browser,
         long query_id,
         String request,
         boolean persistent,
         CefQueryCallback callback) {
      
      // do something here
      return true;
   }
   
   @Override
   public void onQueryCanceled(CefBrowser browser, long query_id) {
      log.info("We closed the tab.");
   }
}


Now on JCEF, I am launching multiple tabs (e.g. 4). And when I close the first tab (in any order), I do see the following log:

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We closed the tab.
WARNING:message_in_transit_queue.cc(18)] Destroying nonempty message queue


But then when I close the other tabs, I don't see the "We closed the tab" log any more.

Any reason why the message queue is getting closed and why closing other tabs doesn't fire the onQueryCanceled for them?