Thanks for this additional information.
Could you watch out for it and when it happens again, please switch to a different theme and see if that helps? I strongly suspect this is not a update-manager but a theme and/or video driver bug.
Thanks for this additional information.
Could you watch out for it and when it happens again, please switch to a different theme and see if that helps? I strongly suspect this is not a update-manager but a theme and/or video driver bug.