A short description of the issue:
Leaving the Ivy Tunnel control point via stairs, encounter a flat object visible only from below, physically blocks player.

When the issue started to occur and what you were doing when it first started:
Nothing unusual, I'd fast travelled to the location and spawn in the supply room, discovered as leaving.

Are you able to recreate the issue?
Left location and returned, issue remains.

Have you tried any troubleshooting?
Appears to be in the physical map geometry, unable to have any effect on it.

Your computer’s specifications.
Windows 10, Intel 8700K CPU, Gigabyte 2080TI, 32gb RAM, Game installed on M2 SSD.

Any screenshots or video of the issue, if possible
Hopefully this link works: https://imgur.com/a/tiI39mJ