I recognize that I'm a couple of years late to the party, but I just upgraded my Tab S3 to this ROM (from Ashyx's original Nougat root version). For the most part, it's working well. But I can't find a combination of Riru Core and EdXposed that shows the framework installed.
First, per the warning Magisk gives, I converted Magisk from a system app to a user app. Using Magisk, I am successful in getting Riru (Core not specified in later versions but I think it is) installed but the installation of EdXposed fails saying Riru is not found. Can I get some pointers on what version works with this ROM? Thanks!
EDIT: I tried with riru 24.4.4 and EdXposed installed correctly and Magisk now shows the framework is installed. So, I have solved the initial problem but my main objective was to implement the Swype Row module. It installs but doesn't actually work. Off to do more homework. Thanks to anyone still reading this thread.