When an observer is triggered, connected repeaters fail to update correctly.\
Link to me demonstrating bug:
Environment
Model Identifier: MacBookPro11,3
Processor Name: Intel Core i7
Processor Speed: 2.6 GHz
Number of Processors: 1
Total Number of Cores: 4
Total Number of Logical Cores: 8
L2 Cache (per Core): 256 KB
L3 Cache: 6 MB
Memory: 16 GB
java version "1.8.0_171"
Java™ SE Runtime Environment (build 1.8.0_171-b11)
Duplicate of MC-151057 (fixed in 1.14.1-pre2)