Enter Key still being sent to Scintilla control, even if used to select the auto-complete item from the list view

[WheelsNotRound]

I am using the latest Scintilla control available as a Nuget package (5.3.2.9).

When selecting an item to auto-complete in the 'popped-up' list view, if I use ENTER to select the item, this does result in the items being selected, and the completed text updating the scintilla control.

However, the ENTER keystroke is also sent to the scintilla control and treated like a normal Enter, resulting in new line lines being created.

Not sure where to look to supress these?

Incidentally, if I set the 'AllowedTabKey' property to 'True' and use the Tab key to select the item, the Tab Key is NOT passed to the scintilla control. So this issue appears to only affect the ENTER key.