I don’t whether its a bug or not but when i updated to the latest version on manager i experienced this issue. Whenever i use to enter a payment and entered some alphabets of the payee i wanted to select, Manager use to fetch the similar payee names from the history which was convenient in a sense that it avoided same payee with different names or similar entries and the payee name stayed throughout constant also it helped to autocomplete if the payee history existed. I am missing this feature!
This occurred when the payer/payee field was enhanced to allow designation of customer, supplier, or other type of payer/payee. It has been reported as a bug: Autocomplete for payer / payee missing.