Here's what my "selections committed with" options look like:
For a while now, I have a problem where pressing tab or typing a character "not valid in a symbol" will still complete the selection, even though I'm only allowing "enter" to do this. I'm using version 5.1722. I've tried checking and then unchecking those options hoping to reset something but it doesn't work.
The option "Any character not valid in a symbol" only applies to suggestion listboxes, which only contain VA's best guess, and cannot be assumed to be always correct. Member listboxes appear after typing a dot or -> and list the class members.
We've added a new registry setting in 1727 which controls the member listbox behavior: add MembersExpandOnAny as a string into the registry:
"Selections committed with" behavior for member lists is now configurable under VA Options | Advanced | Listboxes. (case=9369), implemented in build 1829.