`pixels` panics when using egui

For some reason, when I simply try to create a UI using egui, I get this panic:

[2023-03-25T22:10:29Z ERROR wgpu::backend::direct] Handling wgpu errors as fatal by default
thread 'main' panicked at 'wgpu error: Validation Error

Caused by:
    In a RenderPass
      note: encoder = `pixels_command_encoder`
    In a set_scissor_rect command
    Scissor Rect { x: 0, y: 0, w: 1024, h: 768 } is not contained in the render target Extent3d { width: 256, height: 192, depth_or_array_layers: 1 }
' (...)

The examples work fine, but this doesn't, although I basically copied half of the code from the examples.

If I reduce the size of the window in the screen descriptor to 256x192 (As the error seems to want me to do), it works, but then only that part of the window is actually used, the rest is left over.

No source file or test is named. Reproduce the egui setup described in the issue, then compare its screen descriptor and render-target dimensions with the working examples; done means the UI uses the full window without a wgpu scissor-rect panic.