Two issues after upgrading from A14 to A15

Hi folks,
I recently upgraded two Oneplus 5 “cheeseburger” devices from 3.0.4 A14 to 3.0.4 A15 (via adb sideload).

Since then, the following problems have occurred on both devices:

  1. In Settings->System->Buttons->Home Button: Long press action, I have had Turn screen off set for many years. It has always worked great.
    Since the update, when I turn off the screen by holding down the Home button, the Home button does not work when I first press it after turning the screen back on. Only when I press it a second time do I return to the Home screen. (It doesn’t matter which launcher I use.)
    If I turn off the screen in another way (e.g., power button or double-tapping the status bar), the home button works normally.

  2. The charge control function (Settings->Battery) is malfunctioning. As soon as the limit is reached, for example 80%, the phone starts vibrating wildly, as if you were quickly plugging and unplugging the cable.

At first, I thought these were errors caused by the upgrade?!

Does anyone have any idea what the problem is? Are there any other OnePlus 5 users here who have updated to A15?

Thanks and best regards

Are there no other Oneplus 5 users here?