The issues that you had were a result of changes that you made to the Product Reviews example. The example works just fine, but is a much simpler use case. Most of our examples are simply built to illustrate a specific feature or technique. For more complicated scenarios, the developer will need to find the appropriate solution in the Velo API. Help is available from the online documentation and from the forum community.
The Product Reviews example does not have the option of navigating to other products from the Product Page , but you added this functionality with a Product Gallery Slider . Sam’s suggestion of adding the wixLocation.onChange() was exactly what was needed to correct the problem. The other minor changes that you needed were also due to this new feature that you added. The example doesn’t have bugs - rather these issues were introduced with the functionality that you added.
I reviewed the support tickets (chats and phone calls) and it was clear that you received competent and professional technical support. Understand that we are unable to debug or rewrite complex code and page configurations. If you feel that there is a bug in Velo, then the best way to get assistance is to create a test page (which is what I did) with the minimum scenario in which the problem appears, to help us investigate the issue properly.
Please modify your post to conform to the forum guidelines (abusive language is not tolerated in the forum and can lead to having posts deleted and the user banned). Format your code in a code block so that it is easier to read. Explain what it is that you did so that other members of the community can benefit.