text edit issues onscreen keyboard (web on android and native on android)

[fr-an-k]

Describe the bug
When I open the egui demo website (egui.rs) in Chrome Android (5.1), the previously typed text is copied wherever I type in the markdown editor (after typing one character), but it's in blue and I can use backspace to remove it.

In the textedit the previously typed text stays black (not blue for edited text) and I cannot use backspace to change the previously typed text.

Might have something to do with the onscreen keyboard.
In the 5.1 emulator the demo website stays stuck on a non-animating spinner.

In the wgpu version on Android 8.1 (egui 0.23) the onscreen keyboard doesn't pop up at all (probably still not implemented in winit).
On 5.1 the demo app crashes.
Both using this example: https://github.com/inferrna/hello_world_android_egui

Expected behavior
Should work like a normal text edit.

Smartphone (please complete the following information):

• Device: Tianlong S933L
• OS: Android 5.1/8.1
• Browser: Chrome
• Version: latest supported on this device: 95.0.4638.74