On game output, scroll position is reset to end

When manually scrolling the log output, and there's new game output, the scroll position is forcefully set to the end of the stream.

What I expected to happen was...:
that my current position was retained.

What actually happened was...:
the log scrolls down to the end where new data is appended

Steps to Reproduce:
1. Scroll the log to an arbitrary position
2. wait for new game data, for example a chat message
3. notice the log is forcefully reset to end