Michael Ehrlichman's questions

Fonts in Chrome 95.0.4638.69 (Official Build) (64-bit) in Ubuntu 20.04 KDE Plasma are often appearing white or multicolored. See four examples below. One is text typed into the search bar on the linkedin website. The second example is text typed into gmail. The third is askubuntu.com while typing this very moment. The fourth is rainbow coloring while visiting askubuntu.com. I have refreshed the font cache using fc-cache, but that did not help. I have also tried starting google-chrome-stable with and without "--use-gl=desktop --ignore-gpu-blocklist". The improperly rendered fonts flicker whenever the page is scrolled.

Graphics artifacts started appearing in many web browsers following a recent update. I run KDE through ubuntu 20.04 and am up-to-date as of 8-31-2020. My graphics card is Radeon RX 580. I have tried the non-proprietary drivers and the AMD supplied drivers, the problem shows up the same with either set of drivers. The problem occurs with all browsers I have tried (Firefox, Brave, Chrome, and Chromium). It seems to be related to layers. The artifacts are blocks that appear in the lower left triangle of the screen and flicker whenever I type, move the mouse, and even flicker in time with the blinking cursor. See two attached screen shots for samples.