BJS2, drop in battery life since update

I also experience a significant drop in battery life since the firmware update (before it was over a week, now i barely get two days). I tried to downgrade the firmware, but it didn't help. Now I'm on 2v24.
In the changelog for the newest update one can find this:

Bangle.js2: After Bangle.showTestScreen, put Bangle.js into a hard off state (not soft off)
            Fix for unexpected power draw on newest batch of Bangle.js devices

So I guess they are aware that there is a power draw problem, but at least for me it wasn't fixed by the 2v24 firmwareupdate.