`GuiTextBox()` input not working with raylib SDL backend

[wwderw]

I noticed that when using the SDL backend, GuiTextBox doesn't want to accept user input. It works fine with the default OpenGL backend, but when trying to do input when using the SDL backend, I can get the placeholder text to show up. I can even delete the placeholder text, but no new keyboard input.

[raysan5]

@wwderw I'm afraid this issue could be on raylib side and not raygui related. 🤔

[wwderw]

You want me to post this in that repo as well or just leave it here? Since it was a raygui element, I thought it was more here, but I can post it there, if that is the better location for it.