Hi, George,

That is what the choice column shall do when you set it to allow fill-in. Per my test, I guess you are using Classical experience. It only works in the way you want in modern experience and only works for drop-down menu while not allowing multiple values selected.

It may be better to post your thoughts in uservoice or ask for a service request to see if there is any other option.

This “Microsoft Online: SharePoint Online” Forum will be migrating to a new home onMicrosoft Q&A, please refer to thissticky postfor more details.

Best Regards

Jerry

"SharePoint" forums will be migrating to a new home onMicrosoft Q&A!
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Hi, George,

Do you have any further question about it? If the reply is helpful, please mark it as answer.

Best Regards

Jerry

Hi,

This forum will be locked down, if you still have issues about this question, you can continue to post in here before 8/10/2020. Or, you can create a new question onMicrosoft Q&A, we will continue to support you on the new home.

Best Regards

Jerry