2ad5a39bd0
`ClutterText` painting for editable single_line_mode actors like `StEntry` is always clipped by: `cogl_framebuffer_push_rectangle_clip (fb, 0, 0, alloc_width, alloc_height)` So it's difficult to get the rectangle wrong. However in cases where the target framebuffer has changed (`cogl_push_framebuffer`) such as when updating `ClutterOffscreenEffect` we had the wrong old value of `fb`. And so would be clipping the wrong framebuffer, effectively not clipping at all. (cherry picked from commit b8340f1355bb1949511effb7868aa2ef7e3731dd)