The beam ends will join seamlessly.
There was a similar post just a while ago with a solution but it may not be what you want.
Beams also now have cover fills - but that may not work for you either.
But I just remembered this new setting.
Give this a try.
If your beams are above the Floor Plan Cutting Plane set the 'overhead' to projected.
If your beams are below the Floor Plan Cutting Plane set the 'uncut' to projected.
I will post this answer in the other post as well.
Barry.
One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11