The soft keyboard cannot be pulled up in any text box where text can be entered.
This is an old bug.
Android 11
SDL2 has given us a lot of headaches regarding the virtual keyboard on Android. From what I've read, SDL3 brings significant improvements in that area.
It had been reported for the stable, but it worked in the emulator, at least for the nightly. Which phone which Android version?
I do not have a working Android device anymore, since my Pixel broke, so I can only test with the emulator.
Strangely, after updating to r11908, I had to reselect the font file when I first opened the game, and then I was able to use the virtual keyboard to type again. :P