@Giiba There are already other things not working in QtWebEngine which were working in Oxide that we know of; camera, mic, webgl, hw audio/video decoding, and probably a few other integration points.
However, Oxide is years old, unmaintained, and has known security holes which have been patched in newer versions of Chromium that QtWebEngine is based on. If we keep Oxide in the rootfs and people keep making webapps that use it, we'll never be able to get rid of it. We need to get it out and free up the space, and also get it removed from the realm of concern for developers.
If there are things that worked with
Ubuntu.Web import when it was using Oxide, that don't when using
Morph.Web with QtWebEngine, then let's get those differences documented in open issues against morph-browser on GitHub, rather than spending our time discussing it here, so appropriate people can maybe look into how those can be resolved.
If you really need a webapp using oxide, you can probably repackage a click to include the oxide components, as a temporary solution until your issues can be resolved in Morph/QtWebEngine. No, it's not ideal, but we need to move Ubuntu Touch forward, rather than to keep slowly stepping sideways with it.