As shown in the screenshot.

Manually resizing the window brings the URL/Search bar back (although not properly)

This happened after an update sometime in the Spring.
This is running MacOS Mojave (not available on the right "macOS version are you running?") Mojave support is for better or worse a requirement for me.
Version 1.1.1 (149), WebKit 619.1.11.111.2
Search bar to appear centered and proper w/o further modification of the window
Version 1.1.1 (149), WebKit 619.1.11.111.2
Catalina (10.15)