If I want to group the first 4 eighth notes in the following image
I get the following result :
Removing the last note from the group is not a solution, it would look like this:
I found the following workaround myself, but it is cumbersome.
First I cut up the tied notes in the key editor:
Then I group the eighth notes in the score editor:
Then I glue the separated notes back together in the key editor:
… after which everything finally looks correct in the score editor:
I would be happy if this bug is fixed soon .