There are no issues of fast charging after the update. But I accept the fact that battery drains a bit quicker than before. And, samsung's algorithm stops charging the phone fastly when the phone gets heated up. So it's normal.
Hi! It has been found on the logs that you are using your phone frequently on Facebook and App hunter apps. Both uses high Wifi data. With high usage, there is also longer screen on time and thus the battery drains faster.
Please close also the running apps such as your Facebook Messenger.
