There is still an issue related to the drop down auto complete described in this bug report.
After downloading the Release R2 2020 SP1, we can now enter more than 1 character. However, if the user keys the space bar the text in the edit area of the drop down is deleted. Additionally, if the first 2 characters are the same (for example AA), the second character is never added to the text. The issue can be re-produced using the same steps as the linked post. I have also attached a screenshot.
Let me know if you need any additional info.