Device: realme 8 5G
OS: Android 12 (realme UI 3.0)
App version: 2.7.50420-beta-2022-09-12
I recorded a video, watched it and discovered that whenever the keyboard was visible - the whole screen blacked out.
The keyboard says "secured keyboard" at the top (the same kind of keyboard that pops up when filling in passwords or credit card details), so it makes sense. Of course, a secured keyboard can be multilingual just like any other keyboard. This one isn't.
Check video from here.
The user is adding this information to be taken into consideration as well @Dbrant :
the keyboard is strictly English. My native language is Hebrew. I read, write and edit in Hebrew. All my electronic devices operate with a multilingual, Hebrew and English keyboard.
Lately, when trying to edit articles through the app, the keyboard that pops up is different. For some mysterious reason, it does not contain a button to change language. The only accessible language is English, which means that I'm completely unable to edit using the app, as Hebrew and English use an entirely different letter system.