OpenGL and Calc in (x64)

Installed latest version and suddenly the input bar for formulae at the top of the screen contains unreadable characters, blocks and black squares.

Only way to get the text back to normal was to disable OpenGL and restart.

I am using Windows 10, 64 bit

Version: (x64)
Build ID: 644e4637d1d8544fd9f56425bd6cec110e49301b
CPU Threads: 4; OS Version: Windows 6.19; UI Render: default;
Locale: en-AU (en_AU)