When code completion is open, sometimes the completion suggestion is automatically accepted while typing. I think that happens whenever the completion only returns a single choice.
That is very annoying, since it happens while still typing parts of the symbol name, so these parts will then end up being added behind the completed item.
It is even more annoying when trying to type a new symbol name that triggers this completion with something completely unrelated.
|For Gerrit Dashboard: QTCREATORBUG-21049
|LSP: Do not automatically accept completion while typing