If you revert back to the default sharepoint entry, not a customised one, you will be able to make date entries to the list . It's the powerapps based stuff that isnt working with the date entries. I have also noticed that if I edit an entry where the date was not saved then save it again the date saves the second time
i use the same list to create a new powerapps automatically. it should be a default way to add item but it still can't make it.
but it work when i create a new list and use it create a new app
i have a new try.
i export the list to a query.
disconnect the link
make it to be a new table
export back the excel to create a new list
using the new list to create a new app
the date field work.................
it echo my assumption: new list work, those created at the past can't
i don't think so
i have check already and the bug still there.
Now i have a solution: i create a new date/time field in the same list, re-engine my app pointing to the new field. all formula related to the date have to change. then it work.
maybe it is a kind of solution, but it is really stupid and disappointed with powerapp