If it helps, from my end I work on a 2016 MacBook with a 12-inch screen (2304 x 1440) and that is plugged into a Dell SE2416H 23.8" Full HD (1920x1080) monitor. The resolution was completely wrong in the Dell monitor.
However, the plot thickens. If I move a Chrome window to my MacBook screen and click reveal, the browser extension pop-up for Enpass, it renders properly. Now that my Chrome window is back on the Dell screen again, it is working again fine after moving it back and forth. So this seems to happen intermittently, when changing displays. I had the same issue a couple of weeks ago over a low-resolution projector (not sure of the resolution).