Wrong launch classpath constructed?

Since migrating to Eclipse 2022-12 from 2021-12 I faced twice the issue, that the Eclipse constructed a wrong runtime classpath used for launching, even if the build classpath was correctly:

Case 1:
the build classpath contains the libraries a.jar and b.jar in that order, but in the launch classpath the order was b.jar a.jar

Case 2:
I was migrating a library from 3.24.8 to 3.24.9 which was properly reflected in the build classpath. Nevertheless the launch classpath still contained references to the obsolete 3.24.8 version.

Did anyone encounered similar problems lately? Have there been changes regarding classpath construction between versions 2021-12 and 2022-12?