It resolved the issue previous article mentioned, its a final solution.
You need to clear data no matter what version you are on.
It also fixed a critical issue that if you suddenly lost the network connection when you are using the app, then the phone will become very slow like freezing for a few minutes.
I know I update too frequently, and made a lot of mistakes, but the inner change from 1.25 to 1.30 is very very big, like rewrite a half of total codes. So please forgive me for the buggy updates.