Hi!
Thank you very much for the details. I have looked at the configuration, as well as how the search was replaced, and was able to resolve it. Basically, the plugin was not initialized, as it was ‘injected’ in real time, whenever the search menu button was clicked – so initially on the page load the search bar does not actually exist. To resolve this I have activated this option: https://i.imgur.com/0hTXZij.png
That will try to detect this late injection, and initialize the plugin accordingly. I have also changed the search bar width to 100% (from 30%) and disabled the auto populate feature to make sure it’s working correctly – just letting you know, in case you want to revers those changes.
It should be working now.