The contents of #4284 have been reverted

[rustbasic]

The contents of

• eframe: Early-out from context switching the glow backend #4284
  have been reverted,

and processed as comments.

• Closes After the #4284 update, Viewport graphics are broken. #4289

[emilk]

Which commit in https://github.com/emilk/egui/pull/4284/commits caused a problem for you?

[rustbasic]

Which commit in https://github.com/emilk/egui/pull/4284/commits caused a problem for you?

Yes, #4284

I haven't looked into it in detail yet, other than that it caused a problem and that reverting it solves it.

[rustbasic]

@emilk

If we don't return, we can confirm that there is no problem.

may be, Even if we don't 'return`, the result of fast speed we want is still there.