Thanks, that sounds right but most of the previously affected tweets remain affected by blank rectangles.
Also now in some tweets we get a cropped version of a different oversized image:
Can you tell where, in admin settings, https://raw.githubusercontent.com/opensourcedesign/opensourcedesign.github.io/master/images/opensourcedesign-logo-text-narrow-inverted.png is specified?
That’s in the raw.githubusercontent.com
domain.
Filtering or browsing the log may prove useful.
Today’s inverted logo (below) from a GitHub domain appears different from a previous inverted logo.