https://bugs.freedesktop.org/show_bug.cgi?id=110137
--- Comment #1 from Nicholas Kazlauskas nicholas.kazlauskas@amd.com --- AFAIK, the matching should just be done based on the executable name.
See: src/util/u_process.c
The process name likely differs for the content processes for the browser. You might need both qutebrowser and QtWebEngineProcess blacklisted:
<application name="qutebrowser" executable="QtWebEngineProcess"> <option name="adaptive_sync" value="false" /> </application>
<application name="qutebrowser" executable="qutebrowser"> <option name="adaptive_sync" value="false" /> </application>