Thank you for addressing this issue. As far as I know, the Chrome and the Edge browsers are using multi-process architecture
. This means that it is possible that the process who is using the network resources is different from the main window. Hence, when you place a filter in Fiddler to show only traffic from the process of the main window of the internet browser, you are hiding the traffic from the process which is using the network resources.
In order for Fiddler to adapt to the multi-process architecture of the browsers, we will have to research if there is a deterministic way to find from which process(es) the browser is using the network resources.
Meanwhile, you could use a different technique to capture traffic only from the Chrome or Edge browsers. When the first request/response goes through Fiddler you could right-click on the session in the sessions list view on the left side and click on the Filter Now > Show Only Process= ProcessID
Later, when you want to remove the filter, just right-click on the Hide Process!= ProcessID
label below the QuickExec command line.
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