The world hole bug where chunks do not render appears to be worse than it has been in the past. The world holes are larger and occur far more often than in previous snapshots. The two screenshots were taken within one minute of each other. Also, the 1.5.1 in the affected versions is the 1.5.1 Pre-Release.
Related issues
Attachments
Comments

[media][media]
Duplicate of MC-129, please use the search function to see if your bug has already been submitted. Currently over 54% of tickets are being closed as duplicate.