I'm on a OnePlus 3T running Android 8.0 and I have the same problem. I don't think this is an android version specific issue. Clipping in EN does not work at all. I hope that it is fixed soon.
I recently switched to EN from OneNote and I'm having the same problem. I'm on Android 8.0 and every time I try to clip a webpage it ends in failure. I tried giving the EN app full permissions but still no joy. I can clip the same pages perfectly fine on my phone with OneNote. I'm in the habit of clipping pages during my commute so I can read them on my laptop at home but this problem in EN is really annoying.