Link to folder in file attachment no longer working

I have been using TapForms for about 4-5 years now, but was on an old Mac so I used a previous version. I recently bought a new computer and was therefore able to upgrade to 5.3.41 (on Sequoia).

I have found that something that used to work is no longer functioning. but can’t find anything about this in the help.

I am using the database to catalogue my sewing patterns, many of which are available as sets of PDFs, so I keep each pattern in a folder, and up til now have put a link to the filder in a file attachment field. In the previous version this allowed me to click the link and open the folder concerned, however now when I add a link using the arrow/plus icon, the link generated has ‘unknown file type’ in ‘kind’ and I cannot open the folder.

The links that I set up in the previous version do show ‘folder’ as the ‘kind’ however they are no longer clickable links.