Black line in the focus ring of Abstract section for Feeds

mjthoraval

The focus ring has a black line in the Item Pane of the items in the Feeds:
https://s3.amazonaws.com/zotero.org/images/forums/u265723/kfuclry4aa83zmfkauh3.png

I do not see the problem in other libraries:
https://s3.amazonaws.com/zotero.org/images/forums/u265723/7ux5u0b3csrzqmg2qhym.png

Zotero 7.1-beta.44+057c79820 (64-bit)
Windows 10