Other browsers support this attribute, which allows associating a datalist with an input to provided predefined options and save some typing. On a phone this seems very helpful and I’m surprised to find it doesn’t work.

Is there controversy here or is this too far down the list (so to speak) for Apple to worry about?

Can you write the HTML used for the element you’re talking of?

This one:

https://www.w3schools.com/tags/att_list.asp

Never seen that one in the wild in 30 years of writing HTML. Thanks for sharing!

Forefox for android also doesn't support it yet.

Even Chrome on mobile only supports the drop down list, and not type ahead. Kind of wild — seems like this is a perfect fit for thumb typing devices.

According to the bugzilla its a bug that prevents full support.