Description of the Bug
Personal anchor is not loaded until player loads the chunk where anchor is located.

To Reproduce

1. Place anchor
2. Unload chunk and log off from the server
3. Wait for the chunk to unload (5 min default)
4. Login back - anchor doesn't work until you loads the chunk

Expected behavior
After log in back achor starts working as expected

As a temporary fix, I made a plugin for the server that loads anchors (for 1.7.10)
https://github.com/FadingFog/RailcraftAnchorFix