Meta data filter refresh

After the last update I find that the meta data filter is not being refreshed consistently. For example, if one of the filter columns is set to ISO the available values are not refreshed consistently when I select a different folder in the library. This is not specific to ISO but seems to be a consistent problem across any column value. Additionally, if I edit an image in Ps and save in Ps when I return to Lr sometimes the image is not present in the thumbnails and not present as a TIF file in the meta data filter (when file type is one of the column filters). Clicking off the library folder to another and back again ususally refreshes the filter columns. For example if one of the filter columns is File Type though no specific file type is selected and lets say there are no TIF files in the current selection, then when I edit in Ps and return to Lr where there now should be a TIF file and the meta data should show a TIF file type it does not. Then clicking off the library folder to another and back again usually refreshes the meta data column values for file type and usually the TIF file will then be visible in the thumb nails. Really pretty annoying. There are other instances when the meta data columns are not refreshed but none come to mind at the moment. Again, changing library folders and back again usually causes the meta data filter column values to refresh.