This completed task was founding a fix per non working filter of size. The magento category page has 19 products with different attribute size. So, once the user was selecting the filter per size value 42 for example only one complex product was shown instead of many others. It looked like it was a codeing issue but the problem with this attr which was that the option 'Use In Layered Navigation' (Can be used only with catalog input type Dropdown, Multiple Select and Price) have been set to 'NO' while it was to be set to value of 'filterable with results' as the client needed the web users to filter category by this attr (see below: Use In Layered Navigation.png).
Having set this and reindexed the site the filter became working.
Rate this information:
Votes: 1392May we recommend:
modx evo multilang us charity organisation website on modx evo Change php / html theme opencart Most loved responsive website
MODX CMS extensions Sale:
OCS different template per a product Anonymous checkout opencart installation with vqmod fix responsiveness on OC theme