We need to test more with RTL languages during Beta.

Known issues:

• Typing seems to work fine, but when you press enter, the block gets the wrong alignment. This doesn't happen if you add a new block via inserter.
• Toolbar issue (Android). RTL layout fixes #585
• BottomSheet TextInput issue. Mobile: Fix BottomSheet TextInput Cell alignment issue for RTL layout. WordPress/gutenberg#13815
• RichText placeholder position issue (iOS). Fix placeholder position for RTL layout #591