Reproduction steps:
1. Open attached project "ConsoleScroll.zip" and scene "SampleScene"
2. Enter Play Mode
3. Observe console

Expected result: Console automatically scrolls down
Actual result: Console does not automatically scroll down

Reproducible with: 2018.4.22f1, 2019.3.12f1, 2020.1.0b8, 2020.2.0a9

Workarounds:
1. Logging a single message at least one frame before the non-fitting Logs fixes the issue
2. Resizing the console, so that the logs fit within it for the initial frame fixes the issue. The resizing must be proportional to the number of initial logs, and may not always be enough to accommodate them.