Multiple Filters in a SharePoint Online Custom List

Hi Folks, 

We have been using a custom list with about 700 entries for over a year. We often apply filters on multiple columns to focus on specific data. As an example, we would apply a filter on column A to drill down on a subset of values, and then another filter on Column B - to drill down even further, and so on - often utilizing 4-5 filters, and sometimes saving it as a View for later.  This basic SharePoint functionality was one of the reasons we chose the platfrom. Recently, we've been noticing that trying to apply a filter on even the second column (Column B), removes the filter from the first column (Column A), e.g. the list is only filtered by Column B now. So the filtering beahviour we're seeing is Column A OR Column B OR Column C, and what we need is Column A AND Column B AND Column C (like it has been before).

We dont use any code on this page, just a standard  SharePoint Online Custom list compoenent. 

Any ideas on how to resolve this issue?