Small sections of text on sites are garbled until highlighted

Beginning perhaps a week or two ago and continuing through today after the latest update was installed (Version 81.0.410.1 (Official build) dev (64-bit)) small sections of text on pages on a few different sites are first rendered as an unreadable, garbled mess.

At first I noticed it with italicized text, but once I noted the issue, it appeared not to be limited to that.

Most recently I observed this on this page https://meta.stackoverflow.com/questions/393552/an-account-of-my-meeting-with-the-stack-overflow-management-team?cb=1 toward the end of the main post. This is how the page first rendered:

When I select the text with my mouse it re-renders legibly:

And then remains legible: