Numpad (keypad) inputs not working on the demos

[quantmage]

Nothing happens if you try typing a digit in any input field with numpad keys. My web app based on hello_imgui has the same issue. And I note that it happens on the demos linked in this repo's readme, too, except the calculator one, which I think doing some manual key input handling.

Not sure if the issue is platform-specific (emscripten+sdl2, I believe) or not. I tried to figure out the cause and spent a few hours this morning looking into the relevant code, but no luck so far.

Another demo of yours (https://github.com/pthom/implot_demo) somehow works with numpad keys, so I wonder what's the difference. It doesn't works 100% though. With Num Lock on, it works. But with Num Lock off, nothing happens (in other words, pressing the keypad 4 doesn't work like the left arrow key.) Another ImGui demo that doesn't use SDL2 (https://jnmaloney.github.io/WebGui/imgui.html) works perfectly with numpad keys for both Num Lock on and off.

I would appreciate any insight on how this can be fixed or any workaround.