When using a resource location like a block, an entity or an item id for a command like /give, /setblock or /summon and not using the minecraft: prefix the argument completion suggestion does not appear.
- Type the following command in chat
→ Only suggestions starting with "h" are shown above (expected)
- Type a "u"
→ The suggestions above are not shown anymore because only "husk" would match, but it is not suggested for completion