No font support for characters other than Latin letters and numbers like:

ą

ę

ś

ż

ź

ó

and many non latin

In Java Edition many from this have font support

You can see these in: Polish Letters for MCBE (Java TexturePack).zip, Polish Letters for MCBE.mcpackor from https://novaskinpacks-cbc.kxcdn.com/1.14.4/assets/minecraft/textures/font/ where is all supported from unicode

There is still no font for non-Latin characters. (In Java Edition this was added in version 1.13.1, so all you have to do is copy the files, possibly modify them and correct errors)