If you perform a search on the OPAC, then zoom in to approximately 150% the facets disappear - which is expected. However, if you zoom back out to 100%, they don't reappear. Steps to reproduce: 1. Perform a search on the OPAC. 2. Increase the page zoom level (e.g. to 150% or higher). 3. Observe that the facets beneath “Refine your search” disappear. 4. Reduce the zoom level. 5. Observe that the facets do not reappear.
Does this only happen with one particular browser? I can't reproduce it in Firefox or Vivaldi (Chromium).