Translation Memory sharing (Dropbox) not working as expected


I have been trying to share several TMs through Dropbox, as indicated here:

Both Trados are 2017 SR1, and I am not using Project TMs. I am just trying to do a simple test with a small text file and the usual file based TMs.

I have named them TM-PC1 and TM-PC2. And I set them up like indicated in the above tutorial, this is: PC1 uses both TMs but only updates TM-PC1 and PC2 uses both TMs but only updates TM-PC2.

What I am encountering is this:

When I start a new project in both Trados, it works as expected, it reads from both TMs and when I open the file for translation there are several segments already translated, some of them coming from TM-PC1 and others coming from TM-PC2. Fine.

The problem comes later, when I translate and confirm a new segment in, for example, PC1. TM-PC1 is updated and Dropbox syncs the file in PC2, until here all normal. But then Trados will not show that concordance for the same exact segment in PC2 (the file I am translating is the same in both PC1 and PC2). This is, it does not work in real-time.

However, if I check "update" for both TMs in PC1 and PC2, then it does work in real-time. But this is not recommended because of potential write access conflicts.

Is this normal, or should it work in real-time also in the scenario where each PC updates only its correspondent TM? From the above article, I understand that it should. May I be doing something wrong?Thanks in advance.