It doesn't seem to work in Safari on iPhone correctly. When I click on the Back button (from weather.gc.ca), it goes back to the Vancouver PD site. Therefore I do not think that it is built well.
On that page, it doesn't work reliably in Firefox on Android. If the triple-tap is performed on text, it often just selects the word without navigating away.
The other site someone mentioned (https://www.thetrevorproject.org/) doesn't have that issue.