The bug

The command syntax help which makes suggestions in chat or command blocks is affected by right-to-left languages, converting "[" to "]", "{" to "}" and similar. This causes it to make invalid suggestions.

Affected situations

Likely incomplete

• /give: Suggest "}" for item NBT
• /setblock:
  • Suggests "]" for block state properties, "}" for block entity NBT
  • Suggests block coordinates reversed
  • Suggests tildes without space: /setblock ~~

Reproduction steps

1. Change the language to a right-to-left one, e.g. Arabic (first right-to-left language in the list)
2. Type the following command in chat

   /give @s command_block
   

   It suggests the closing "}" instead of the opening one ("{")