Thank you @Markus Kuhn, my kids had been playing around with my Asus ROG Strix Flare keyboard and locked it to a higher refresh rate. Fn + Left Alt + F4 (God knows how they managed that combo exactly).
This issue is repeatable if you have a keyboard that can increase the repeat rate (usually Gaming keyboards). And you'll quickly notice that when you hold a key down in Notepad etc, your repeat rate is very fast.
See atached GIF for evidence:
[FoV-Issue|https://i.imgur.com/8fsNrdh.gifv]
Fabian it's the same issue across platforms.
Case and point:
Java: https://i.imgur.com/l29cNyP.gifv
Windows: https://i.imgur.com/8fsNrdh.gifv