This is with latest version of opnsense 23.1.7_3. Using latest version of chromium browser with zoom settings set to default (100%). Screen resolution is 3840 x 2160 and this is how the WG widget looks like.
(https://i.ibb.co/XpTXnxf/wg-widget.png)
And this is how it looks like when zoom is set at 80%.
(https://i.ibb.co/0FxX9p2/wg-widget-zoom-80.png)
At default settings It looks quite ugly and handshake time can not be seen unless i zoom back to 80% but then, everything is too small and hard to see/read. My suggestion would be to remove displaying of private key if possible.