So, I discovered that MC-165595 is not always reproducable, so I discovered that the beam is now darker then before.
Related issues
is duplicated by
Attachments
Comments

[media][media][media]

For me, there just isn't a laser at all, just the bubbles.

That is because the worlds that were opened in some 1.15 snapshot do not render the laser. If you start a new world, this issue should be present.

The laser is no longer darker when I test it in 20w45a

Resolving as fixed for now then.