I had this issue occur one other time (in Pale Moon - the issue has been the last time and this time unique to Pale Moon).
What I get is lines of little dots under every link in the Widget.
The last time this occurred had to do with Bookmarks and by removing a recently added bookmark and then adding it back again solved the issue in that case.
This time it is not about "Bookmarks" (which might make more sense) - but instead this time it is "feed" links in a "News Feed" Widget.
There's no way to remove "news feed" links - so I have been waiting over months hoping that at some point if there is an issue with a "news feed" link that the "offending" news link would drop-off as the feeds become increasingly "old" and no longer display - but the issue continues to persist.
So anyone who uses Start.me - have any idea how to fix this issue?
Off-topic:
I haven't wanted to open a start.me ticket because the start.me folks keep releasing updates that I have no interest in at all - but the updates very often end up negatively impacting what I do want to work so much of the time (due to the unforeseen, unintended, consequences of their updates). Something I've been complaining about with start.me for some time (suggesting that when they make changes that can impact what works to make the new updated features optional for users - to help in keeping what formerly works intact - which falls on deaf ears unfortunately) - so I'm reluctant to bring this up with them, at least at this time.
I haven't wanted to open a start.me ticket because the start.me folks keep releasing updates that I have no interest in at all - but the updates very often end up negatively impacting what I do want to work so much of the time (due to the unforeseen, unintended, consequences of their updates). Something I've been complaining about with start.me for some time (suggesting that when they make changes that can impact what works to make the new updated features optional for users - to help in keeping what formerly works intact - which falls on deaf ears unfortunately) - so I'm reluctant to bring this up with them, at least at this time.