can't see how to copy/paste selected text without an on-screen keyboard

My version of HedgeDoc is: 1.9.3

What I expected to happen:
Hello, I am trying to use Hedgedoc on a tablet with Android. But I can’t see how to copy/paste selected text without an on-screen keyboard. I am using Graffiti for Android, a quick pen input method that Android inherited from Palm Pilot.

What actually happened:

Is there a solution that works with fingers or stylus?

I already tried:

Due to a bug in the used editor component HedgeDoc 1 doesn’t support mobile devices.
We can’t fix this. HedgeDoc 2 won’t have this issue because we’ll switch to an editor that has better support for screen readers and mobile devices. I’m not sure if your special input method will be covered as well but you can test it on the UI-demo on hedgedoc.dev .