I noticed two more things since the last time :
1. disabling DNS filtering did not removed the issue after all
2. disabling then re-enabling wifi is a working and faster workaround than restarting AdGuard.
The best antivirus in the world is free forever and it's your brain. Its main submodules are called : "common sense", "thinking before clicking", "big green download buttons are fake" and "using an adblocker".
So, at first, I thought I would only have to disable "DNS requests blocking" but it didn't solved the issue, so I disabled the entire "DNS Filtering" module and the issue seem to be gone.
However, I absolutely need "DNS filtering" to be enabled, because I need to use uncensored DNS servers.
I would like to suggest adding network and preview tabs on Adguard for Android's filtering log, like in PC (Windows for me).
These allows to get more info on HTTP events, like request headers, response headers and response body.
I don't know how you uploaded the image but I can't, the editor only offer me to embed an already hosted image.
So I wanted to show you a screenshot : I try, but I can't find Instagram in the programs list that Adguard shows
There may be no way to block Instagram's ads yet, but I would like to see the UWP client's requests in the logs anyway.
So, I tried adding it to the filtered apps list, but despite it is on the C:\Program Files\WindowsApps folder list, I can't find it on AdGuard's programs list.