An example would be when I’m typing:
admin.site.reg...
The completion when I commit / apply the suggestion includes not just the method name (register()), but also “(model_or_iterable, admin_class)” — half of which I have to go back and delete.
All I want committed / applied is the method name with empty parentheses.
When applying the completion, leave Ctrl pressed (i.e.: instead of applying with Enter, apply with Ctrl+Enter — although in that case you’ll have to add the parenthesis).