Steps to Reproduce:
1. In Runtime -> Platform -> Log Viewer open 2 log files
2. In first opened log file, using Find form try to search some string, lets say 'WARN', it's probably working
3. In second opened log file, using Find form try to search another string, let's say 'INFO'
In second opened log file search string from the first file ('WARN') is found and it's unable to navigate to next found string.
The correct string ('INFO') should be found and it should be possible to navigate to the next occurrence.