We have a library with Version control (major/minor). Until recently it worked fine. Currently however, when you go to update the properties of a document it checks out the document and creates a minor version, but the 'change' made doesn't seem to save. The minor version does not show the change and if you go back into the properties to make any additional changes it also does not show. This occurs both if you don't or do check-in the document.
However, if you open the document and change the column properties from within Word and save the document, the properties get updated on the draft as expected.
It seems like we had this same issue years ago, but I can't seem to find the solution we did previously.