imgui v1.92.0 removed font_atlas_get_tex_data_as_rgba32 so the font texture can no longer be obtained like this:

https://github.com/pygfx/wgpu-py/blob/d25edb102644f74c0d12e24996f757eac77b57fa/wgpu/utils/imgui/imgui_backend.py#L146C9-L146C20

They suggest moving to dynamic fonts, an example for the opengl backend is provided here:

https://github.com/pthom/imgui_bundle/blob/45da61745fc24c5ded350ea35e834dc9d73525fc/bindings/imgui_bundle/python_backends/opengl_base_backend.py#L45-L141

I can't dig into this right now, posting to document for now.