If you write a commands like /summon horse ~ ~ ~ then go back and remove horse and start to type a different entity name it wont auto complete the word. This is different than 1.12.2. https://youtu.be/DaQ41umkzBc?t=5m41s
MC-131383
Commands don't auto complete if you go back midway and edit it.
Resolved
Duplicate
4
Thank you for your report!
However, this issue has been closed as a Duplicate of MC-123806.
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