Starting with Android 10, SwiftKey does auto-capitalization for Georgian language.
The problem is, Georgian does NOT have capital letters, so SwiftKey puts some weird Mtavruli script letters in their place, making the letters appear very weird when the text is sent to other systems.
To reproduce: Enable "Auto capitalize" feature in SwiftKey on Android 10. Type and send Georgian text in a facebook message to someone. Open that message on a Windows 7 computer - you will see a square as the first letter. Opening it on some other systems also exposes the problem - the first letters just look weird (e.g. on openSUSE Linux).
I would disable "Auto capitalize", but it's a global option for all languages and I still want it in English.
P.S. Gboard also had this problem, but they fixed it very soon after Android 10 release.