I think the correspondence icon in the profile pages aren’t loading for me on Chrome either as well as the icons you pointed about in Review/Analysis mode etc.
Is it only us three or something? You’d think a bug like this should have lots of people getting it.
I can confirm this with Firefox on macOS 10.14.6, and it’s the same here.
Ditto with Safari:
… and with Chrome:
@anoek will want to know.
Two icons in sidebar also missing:
Same icons are broken on mobile Chrome on Android for me
FYI- the bug has been traced to a webpack upgrade.
It’s been fixed and should go live soon.