Statistics Graph card and DST


I have two statistics graph cards to monitor energy usage and production. Since last Sunday they are displaying only very thin bars, which makes them unusable for any period longer than a few days. My guess is, that there’s some problem with the daylight saving time.
If I set the “Days to Show” value in a way, that the last Sunday - where the clock changed to DST - is not included it’s fine, otherwise I get those thin bars. As you can see on the screenshots, I get two values for the 27th (the day after DST change), one at midnight and one at 01:00am. If I set the chart type to Line I get there a discontinuity in the graph.

I’m using
Home Assistant 2023.1.7
Frontend 20230110.0 - latest

Any ideas what I can do?