This is a different issue. @Jojo, the issue you referenced it the problem with beams jumping when they cross a system break (auto or hard). This problem is that you cannot get beams to cross a barline at all.
This problem didn't exist in any 2.x version, so this is a regression that may or may not be fixed along with the other issue. I think it was a mistake to group the problems together. I'll defer to you but I don't like it.
Comments
You are correct. I thought there was already a bug report for this, but I can't find it.
See #16278: Beaming notes over barlines and line breaks
This is a different issue. @Jojo, the issue you referenced it the problem with beams jumping when they cross a system break (auto or hard). This problem is that you cannot get beams to cross a barline at all.
Which is mentioned there to, near the end
This problem didn't exist in any 2.x version, so this is a regression that may or may not be fixed along with the other issue. I think it was a mistake to group the problems together. I'll defer to you but I don't like it.