Some of the Arabic fonts we currently bundle with LO are outdated versions. Example: Noto Naskh Arabic Medium. Bundled version (with the latest nightly): 1.07 Latest version: 2.016 https://github.com/notofonts/arabic the version we bundle is 8 years old (!) We should check all of our Arabic fonts (and perhaps other bundled fonts?) against their official sources - right now, and also periodically, at least once before every major release, and perhaps once before every minor release.
*** This bug has been marked as a duplicate of bug 150066 ***