Today I updated my Android Studio to the newest stable version Android Studio Arctic Fox | 2020.3.1 Patch 4
and whenever open xml most of command not showing in prediction in even if old or new projects and some of attributes is Unknown in xml
like margin / scale type .. etc
i've tried many of solutions that not working like
1- invalidate caches / restart
2- remove .idea folder
3- reinstall android studio and sdk
Thank you in advance. A portion of error is listed below