@mcdanlj From what I see on your forum, it’s related to Discourse Tooltips.
It might be possible a side-effect of the update to use the topic-link plugin outlet and CSS adjustments might be missing.
I did not check much yet.
A quick CSS fix that you can try, for now:
.link-top-line > .fk-d-tooltip__trigger-container {
display: block;
}